stub out section for 3rd-party auth docs

Author: mradamcox

docs/getting-started/creating-accounts.md

@@ -0,0 +1,16 @@
+# Creating an account
+
+## Sign up
+
+All you need to do to begin contributing on _OldInsuranceMaps.net_ is create an account. 
+
+!!! info 
+    You must agree that any contributions you make will be licensed [CC0](https://creativecommons.org/public-domain/cc0/) ("No Rights Reserved"), meaning that your work is effectively in the public domain. See the [Data Agreement](https://oldinsurancemaps.net/data-agreement) for more details about this.
+
+## 3rd-party authentication
+
+If you have already have an account on [OpenStreetMap](https://openstreetmap.org), you can use that account as an authentication provider whenever you login into OIM. How does this work? The process differs a bit based on whether you are creating a new OIM account or already have one and want to link OSM to it, but the result is the same: An OIM account that is completely independent of OpenStreetMap, *but*, instead of entering a password to signin you will login to OSM and be redirected back to OIM.
+
+When creating a new account, you can use an existing account on **OpenStreetMap** as your authentication provider. Using a 3rd-party during account creation means you will not need to create a new password for your OIM account (though you can create an password later if you want).
+
+You can ease the signin process by linking your OIM account with an existing account on another platform, such as OpenStreetMap. 

docs/getting-started/georeferencing.md docs/overview.mddocs/getting-started/georeferencing.md renamed to docs/overview.md

@@ -1,9 +1,5 @@
 # Overview
 
-## Sign up to begin georeferencing
-
-All you need to do to begin contributing on _OldInsuranceMaps.net_ is create an account. You must agree that any contributions you make will be licensed [CC0](https://creativecommons.org/public-domain/cc0/) ("No Rights Reserved"), meaning that your work is effectively in the public domain. See the [Data Agreement](https://oldinsurancemaps.net/data-agreement) for more details about this.
-
 ## How the site is structured
 
 You can browse content in the platform by map, by place name, or by map name. To learn more about these search methods, see [Finding maps](./guides/finding-maps.md).

zensical.toml

@@ -50,8 +50,9 @@ Copyright © 2026 Adam Cox
 # Read more: https://zensical.org/docs/setup/navigation/
 nav = [
     { "Welcome!" = "index.md"},
+    { "Overview" = "overview.md"},
     { "Getting started" = [
-        "getting-started/georeferencing.md",
+        "getting-started/creating-accounts.md",
         "getting-started/finding-maps.md",
         "getting-started/viewer.md",
     ]},