diff --git a/README.md b/README.md
index 8715d4d91..678e0d108 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,30 @@ Prerequisites: JDK 11, update Intellij to the most recent version.
    | |_| | |_| |   <  __/
    |____/ \__,_|_|\_\___|
    ```
+
+## How to use
+
+The commands this program uses are; `todo`, `deadline`, `event`, `list`, `mark`, `find`, `delete` and `bye`**
+`todo`, `deadline` and `event` are the different types of tasks you can add into your list to keep track of.
+
+1. `todo`s are the simplest task to add as they do not require you to add in a start/end time, only a description of the task
+e.g. `todo lunch`
+
+2. `deadline`s, as the name suggests, are tasks which have a deadline. The due date or time is indicated after a `/`
+e.g. `lunch/12pm`
+
+3. `event`s are tasks which have a duration, from a start time to an end time
+e.g. `lunch/12pm/1pm
+
+4. `list` shows you the tasks which you have added. You can view them by simply typing `list`
+
+5. `mark` checks off the task which you have completed.
+e.g. `mark 3`
+
+6. `find` searches your list of tasks to find those which have a certain ketword present.
+e.g. `find lunch`
+
+7. `delete` removes one of the tasks in your list
+e.g. `delete 2`
+
+Finally, `bye` allows you the exit program
diff --git a/src/main/java/AddTask.java b/src/main/java/AddTask.java
new file mode 100644
index 000000000..1285c7ad7
--- /dev/null
+++ b/src/main/java/AddTask.java
@@ -0,0 +1,2 @@
+public class AddTask {
+}
diff --git a/src/main/java/ByeCommand.java b/src/main/java/ByeCommand.java
new file mode 100644
index 000000000..d5dc5f1af
--- /dev/null
+++ b/src/main/java/ByeCommand.java
@@ -0,0 +1,2 @@
+public class ByeCommand {
+}
diff --git a/src/main/java/Deadline.java b/src/main/java/Deadline.java
new file mode 100644
index 000000000..5ac06844b
--- /dev/null
+++ b/src/main/java/Deadline.java
@@ -0,0 +1,13 @@
+public class Deadline extends Task{
+    protected String dueDate;
+
+    public Deadline(String description, String dueBy) {
+        super(description);
+        this.dueDate = dueBy;
+    }
+
+    @Override
+    public String toString() {
+        return "[D]" + super.toString() + " (due by: " + dueDate + ")";
+    }
+}
diff --git a/src/main/java/DeleteCommand.java b/src/main/java/DeleteCommand.java
new file mode 100644
index 000000000..1ba316b3f
--- /dev/null
+++ b/src/main/java/DeleteCommand.java
@@ -0,0 +1,2 @@
+public class DeleteCommand {
+}
diff --git a/src/main/java/DisplayMessages.java b/src/main/java/DisplayMessages.java
new file mode 100644
index 000000000..0aa0c0b92
--- /dev/null
+++ b/src/main/java/DisplayMessages.java
@@ -0,0 +1,2 @@
+public class DisplayMessages {
+}
diff --git a/src/main/java/Duke.java b/src/main/java/Duke.java
index 5d313334c..afcc3530b 100644
--- a/src/main/java/Duke.java
+++ b/src/main/java/Duke.java
@@ -1,10 +1,180 @@
+import java.util.Scanner;
+import java.util.Arrays;
 public class Duke {
+
+    private static Scanner in = new Scanner(System.in);
+    private static final Task[] tasks = new Task[100];
+    private static final Task[] foundTasks = new Task[100];
+
+    public static void whatToDo(String line) {
+        try {
+            command(line);
+        }
+        catch (InvalidCommandException error) {
+            System.out.println("Try using one of following commands: todo, deadline, event.");
+            line = in.nextLine();
+            whatToDo(line);
+        }
+        catch (IndexOutOfBoundsException error) {
+            System.out.println("Oops! You need to provide a description/time for your task");
+            line = in.nextLine();
+            whatToDo(line);
+        }
+    }
+
+    public static boolean isWordPresent(Task task, String keyword) {
+        String[] words = (task.description).split(" ");
+
+        for (String temp : words) {
+            if (temp.compareToIgnoreCase(keyword) == 0) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public static void command(String line) throws InvalidCommandException {
+        String exitCommand = "bye";
+        String taskList = "list";
+        String checkAsDone = "mark";
+        String del = "delete";
+        String search = "find";
+        int numberOfTasks = 0;
+
+        String[] tokens = line.split(" ", 2);
+        String command = tokens[0];
+
+        while (!command.equals(exitCommand)) {
+            if (tokens[0].equals(taskList)) {
+                System.out.println("Here are your list of tasks to complete!");
+                for (int i = 0; i < numberOfTasks; ++i) {
+                    System.out.format("%d. ", (i + 1));
+                    System.out.println(tasks[i]);
+                }
+                line = in.nextLine();
+                tokens = line.split(" ", 2);
+                command = tokens[0];
+            } else if (command.equals(checkAsDone)){
+                int finishedTask = Integer.parseInt(tokens[1]) - 1;
+                tasks[finishedTask].markDone();
+                System.out.println("Alright! I have marked the task as complete!");
+
+                for (int i = 0; i < numberOfTasks; ++i) {
+                    System.out.format("%d. ", (i + 1));
+                    System.out.println(tasks[i]);
+                }
+
+                line = in.nextLine();
+                tokens = line.split(" ", 0);
+                command = tokens[0];
+            } else if (command.equals(del)) {
+                int taskToDelete = Integer.parseInt(tokens[1]) - 1;
+                for (int i = taskToDelete; i < (tasks.length - 1); ++i) {
+                    tasks[i] = tasks[i + 1];
+                }
+                --numberOfTasks;
+                System.out.println("Removed task number " + (taskToDelete + 1) + ". Here are your remaining tasks:");
+                for (int i = 0; i < numberOfTasks; ++i) {
+                    System.out.format("%d. ", (i + 1));
+                    System.out.println(tasks[i]);
+                }
+
+                line = in.nextLine();
+                tokens = line.split(" ", 0);
+                command = tokens[0];
+            } else if (command.equals(search)) {
+                String itemToFind = tokens[1];
+                int searchNumber = 0;
+
+                for (int i = 0; i < numberOfTasks; ++i) {
+                    if (isWordPresent(tasks[i], itemToFind)) {
+                        foundTasks[searchNumber] = tasks[i];
+                        searchNumber++;
+                    }
+                }
+                System.out.println("Tasks matching with " + itemToFind);
+                for (int i = 0; i < searchNumber; ++i) {
+                    System.out.format("%d. ", (i + 1));
+                    System.out.println(foundTasks[i]);
+                }
+
+                line = in.nextLine();
+                tokens = line.split(" ", 0);
+                command = tokens[0];
+            } else {
+                    String task = tokens[1];
+                    switch(command) {
+                    case "todo":
+                        Task t = new ToDo(task);
+                        tasks[numberOfTasks] = t;
+                        tasks[numberOfTasks].isDone = false;
+                        ++numberOfTasks;
+                        break;
+                    case "deadline":
+                        String[] taskDeadline = task.split("/", 2);
+                        String taskDescription = taskDeadline[0];
+                        String dueBy = taskDeadline[1];
+
+                        Task d = new Deadline(taskDescription, dueBy);
+                        tasks[numberOfTasks] = d;
+                        tasks[numberOfTasks].isDone = false;
+                        ++numberOfTasks;
+                        break;
+                    case "event":
+                        String[] taskEvent = task.split("/", 3);
+                        String eventDescription = taskEvent[0];
+                        String start = taskEvent[1];
+                        String end = taskEvent[2];
+
+                        Task e = new Event(eventDescription, start, end);
+                        tasks[numberOfTasks] = e;
+                        tasks[numberOfTasks].isDone = false;
+                        ++numberOfTasks;
+                        break;
+                    default:
+                        System.out.println("Sorry! I couldn't understand your command:( Please try again.");
+                        throw new InvalidCommandException();
+                    }
+                    System.out.println("added: " + line);
+                    line = in.nextLine();
+                    tokens = line.split(" ", 0);
+                    command = tokens[0];
+                }
+            }
+        System.out.println("Bye! Hope to see you again");
+    }
+
     public static void main(String[] args) {
-        String logo = " ____        _        \n"
-                + "|  _ \\ _   _| | _____ \n"
-                + "| | | | | | | |/ / _ \\\n"
-                + "| |_| | |_| |   <  __/\n"
-                + "|____/ \\__,_|_|\\_\\___|\n";
+        String logo = " ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡟⠋⠈⠙⣦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠤⢤⡀⠀⠀\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠈⢇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠞⠀⠀⢠⡜⣦⠀\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡃⠀⠀⠀⠀⠈⢷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠊⣠⠀⠀⠀⠀⢻⡘⡇\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃⠀⠀⠀⠀⠀⠀⠙⢶⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡠⠚⢀⡼⠃⠀⠀⠀⠀⠸⣇⢳\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣾⠀⣀⠖⠀⠀⠀⠀⠉⠀⠀⠈⠉⠛⠛⡛⢛⠛⢳⡶⠖⠋⠀⢠⡞⠀⠀⠀⠐⠆⠀⠀⣿⢸\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠻⣦⣀⣴⡟⠀⠀⢶⣶⣾⡿⠀⠀⣿⢸\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⠞⠁⠀⠀⠀⠀⠀⠀⠀⠀⡠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠻⣏⠀⠀⠀⣶⣿⣿⡇⠀⠀⢏⡞\n" +
+                "⠀⠀⠀⠀⠀⠀⢀⡴⠛⠀⠀⠀⠀⠀⠀⠀⠀⢀⢀⡾⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⢦⣤⣾⣿⣿⠋⠀⠀⡀⣾⠁\n" +
+                "⠀⠀⠀⠀⠀⣠⠟⠁⠀⠀⠀⣀⠀⠀⠀⠀⢀⡟⠈⢀⣤⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠙⣏⡁⠀⠐⠚⠃⣿⠀\n" +
+                "⠀⠀⠀⠀⣴⠋⠀⠀⠀⡴⣿⣿⡟⣷⠀⠀⠊⠀⠴⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⠀⠀⠀⠀⢹⡆\n" +
+                "⠀⠀⠀⣴⠃⠀⠀⠀⠀⣇⣿⣿⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⡶⢶⣶⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇\n" +
+                "⠀⠀⣸⠃⠀⠀⠀⢠⠀⠊⠛⠉⠁⠀⠀⠀⠀⠀⠀⠀⢲⣾⣿⡏⣾⣿⣿⣿⣿⠖⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢧\n" +
+                "⠀⢠⡇⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠈⠛⠿⣽⣿⡿⠏⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡜\n" +
+                "⢀⡿⠀⠀⠀⠀⢀⣤⣶⣟⣶⣦⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇\n" +
+                "⢸⠇⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇\n" +
+                "⣼⠀⢀⡀⠀⠀⢷⣿⣿⣿⣿⣿⣿⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡇\n" +
+                "⡇⠀⠈⠀⠀⠀⣬⠻⣿⣿⣿⡿⠙⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⠁\n" +
+                "⢹⡀⠀⠀⠀⠈⣿⣶⣿⣿⣝⡛⢳⠭⠍⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⠃⠀\n" +
+                "⠸⡇⠀⠀⠀⠀⠙⣿⣿⣿⣿⣿⣿⣷⣦⣀⣀⣀⣤⣤⣴⡶⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣰⠇⠀⠀\n" +
+                "⠀⢿⡄⠀⠀⠀⠀⠀⠙⣇⠉⠉⠙⠛⠻⠟⠛⠛⠉⠙⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡰⠋⠀⠀⠀\n" +
+                "⠀⠈⢧⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠞⠁⠀⠀⠀⠀\n" +
+                "⠀⠀⠘⢷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠞⠁⠀⠀⠀⠀⠀⠀\n" +
+                "⠀⠀⠀⠀⠱⢆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡴⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀\n" +
+                "⠀⠀⠀⠀⠀⠀⠛⢦⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣠⠴⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀\n" +
+                "⠀⠀⠀⠀⠀⠀⠀⠀⠈⠛⠲⠤⣤⣤⣤⣄⠀⠀⠀⠀⠀⠀⠀⢠⣤⣤⠤⠴⠒⠛⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀";
         System.out.println("Hello from\n" + logo);
+        System.out.println("Hi! My name is Doge. \n Nice to meet you!");
+
+        String line;
+        line = in.nextLine();
+        whatToDo(line);
     }
 }
diff --git a/src/main/java/Event.java b/src/main/java/Event.java
new file mode 100644
index 000000000..6622efcf7
--- /dev/null
+++ b/src/main/java/Event.java
@@ -0,0 +1,15 @@
+public class Event extends Task{
+    protected String start;
+    protected String end;
+
+    public Event(String description, String start, String end) {
+        super(description);
+        this.start = start;
+        this.end = end;
+    }
+
+    @Override
+    public String toString() {
+        return "[E]" + super.toString() + " (from: " + start + " to " + end + ")";
+    }
+}
diff --git a/src/main/java/InvalidCommandException.java b/src/main/java/InvalidCommandException.java
new file mode 100644
index 000000000..c6b3a54e2
--- /dev/null
+++ b/src/main/java/InvalidCommandException.java
@@ -0,0 +1,2 @@
+public class InvalidCommandException extends Exception {
+}
diff --git a/src/main/java/ListCommand.java b/src/main/java/ListCommand.java
new file mode 100644
index 000000000..9f89570cc
--- /dev/null
+++ b/src/main/java/ListCommand.java
@@ -0,0 +1,3 @@
+public class ListCommand {
+
+}
diff --git a/src/main/java/META-INF/MANIFEST.MF b/src/main/java/META-INF/MANIFEST.MF
new file mode 100644
index 000000000..9f37e4e0a
--- /dev/null
+++ b/src/main/java/META-INF/MANIFEST.MF
@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: Duke
+
diff --git a/src/main/java/MarkCommand.java b/src/main/java/MarkCommand.java
new file mode 100644
index 000000000..dc808500b
--- /dev/null
+++ b/src/main/java/MarkCommand.java
@@ -0,0 +1,2 @@
+public class MarkCommand {
+}
diff --git a/src/main/java/Parser.java b/src/main/java/Parser.java
new file mode 100644
index 000000000..f872d5b13
--- /dev/null
+++ b/src/main/java/Parser.java
@@ -0,0 +1,22 @@
+
+public class Parser {
+
+    String command;
+    String taskDescription;
+    String deadline;
+    String startDate;
+    String endDate;
+    String taskNumber;
+    boolean shouldQuit = false;
+
+
+    public Parser (String userInput) {
+        String[] tokens = userInput.split(" ");
+        command = tokens[0];
+
+        switch(command) {
+            case "list":
+
+        }
+    }
+}
diff --git a/src/main/java/Task.java b/src/main/java/Task.java
new file mode 100644
index 000000000..dbf3a0fcd
--- /dev/null
+++ b/src/main/java/Task.java
@@ -0,0 +1,25 @@
+public class Task {
+    protected String description;
+    protected boolean isDone;
+
+    public Task(String description) {
+        this.description = description;
+        this.isDone = false;
+    }
+
+    public String getStatus() {
+        return (isDone ? "[X]" : "[ ]"); // mark done task with X
+    }
+
+    public void markDone() {
+        this.isDone = true;
+    }
+
+    public void unmarkDone() {
+        this.isDone = false;
+    }
+
+    public String toString() {
+        return getStatus() + " " + description;
+    }
+}
diff --git a/src/main/java/ToDo.java b/src/main/java/ToDo.java
new file mode 100644
index 000000000..38788ba66
--- /dev/null
+++ b/src/main/java/ToDo.java
@@ -0,0 +1,11 @@
+public class ToDo extends Task {
+
+    public ToDo(String description) {
+        super(description);
+    }
+
+    @Override
+    public String toString() {
+        return "[T]" + super.toString();
+    }
+}
diff --git a/src/main/java/Ui.java b/src/main/java/Ui.java
new file mode 100644
index 000000000..99e594237
--- /dev/null
+++ b/src/main/java/Ui.java
@@ -0,0 +1,4 @@
+public class Ui {
+
+
+}
diff --git a/src/main/java/UnmarkCommand.java b/src/main/java/UnmarkCommand.java
new file mode 100644
index 000000000..6d3ac5a36
--- /dev/null
+++ b/src/main/java/UnmarkCommand.java
@@ -0,0 +1,2 @@
+public class UnmarkCommand {
+}