Overhaul end user documentation

docs/user_documentation/libraries/index.md

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+# Libraries
+
+Libraries enable you to organize audio content you upload to your {term}`pod`. You can set the privacy level on libraries to control who can access them. Choose from the available privacy levels:
+
+- __Everyone, across all instances__ – the library's content is available to everybody who interacts with your pod. This includes users of other pods.
+- __Everyone on this instance__ – the library's content is available to all users on your pod. This does not include users of other pods.
+- __Nobody except me__ – the library's content is only available to you and people you share the library with.
+
+Use libraries for private collections or freely licensed music you want to share.
+
+```{toctree}
+---
+caption: Manage your libraries
+maxdepth: 1
+---
+
+create_library
+edit_library
+delete_library
+
+```
+
+```{toctree}
+---
+caption: Manage library content
+maxdepth: 1
+---
+
+tag_music
+upload_content
+edit_content
+delete_content
+
+```
+
+```{toctree}
+---
+caption: Share and follow libraries
+maxdepth: 1
+---
+
+share_library
+follow_library
+
+```