diff --git a/src/en/SUMMARY.md b/src/en/SUMMARY.md
index c2ffd51..e5932a2 100644
--- a/src/en/SUMMARY.md
+++ b/src/en/SUMMARY.md
@@ -11,6 +11,7 @@
   - [Install on AWS](administration/on_aws.md)
   - [First Steps](administration/first_steps.md)
   - [Configuration](administration/configuration.md)
+  - [Theming Guide](client_development/theming.md)
   - [Getting started with Federation](administration/federation_getting_started.md)
   - [Troubleshooting](administration/troubleshooting.md)
   - [Backup and Restore](administration/backup_and_restore.md)
@@ -19,7 +20,6 @@
   - [Lemmy Protocol](federation/lemmy_protocol.md)
 - [Client Development](client_development/client_development.md)
   - [HTTP API extras](client_development/http_api_extras.md)
-  - [Theming Guide](client_development/theming.md)
   - [Creating a Custom Frontend](client_development/custom_frontend.md)
 - [Contributing](contributing/contributing.md)
   - [Docker Development](contributing/docker_development.md)
diff --git a/src/en/administration/administration.md b/src/en/administration/administration.md
index 7a119c1..d34647c 100644
--- a/src/en/administration/administration.md
+++ b/src/en/administration/administration.md
@@ -11,6 +11,8 @@ Lemmy has two primary installation methods:
 
 We recommend using Ansible, because it simplifies the installation and also makes updating easier.
 
+Lemmy uses roughly 150 MB of RAM in the default Docker installation. CPU usage is negligible. 
+
 ### Other installation methods
 > ⚠️ **Under your own risk.**
 
diff --git a/src/en/administration/theming.md b/src/en/administration/theming.md
new file mode 100644
index 0000000..f0337cf
--- /dev/null
+++ b/src/en/administration/theming.md
@@ -0,0 +1,7 @@
+# Theming Guide
+
+Lemmy uses [Bootstrap v4](https://getbootstrap.com/), and very few custom css classes, so any bootstrap v4 compatible theme should work fine. Use a tool like [bootstrap.build](https://bootstrap.build/) to create a bootstrap v4 theme. Export the `bootstrap.min.css` once you're done, and save the `_variables.scss` too.
+
+If you installed Lemmy with Docker, save your theme file to `./volumes/lemmy-ui/extra_themes`. For native installation (without Docker), themes are loaded by lemmy-ui from ./extra_themes folder. A different path can be specified with LEMMY_UI_EXTRA_THEMES_FOLDER environment variable.
+
+After a theme is added, users can select it under `/settings`. Admins can set a theme as site default under `/admin`.
\ No newline at end of file
diff --git a/src/en/administration/troubleshooting.md b/src/en/administration/troubleshooting.md
index b890d6e..1923011 100644
--- a/src/en/administration/troubleshooting.md
+++ b/src/en/administration/troubleshooting.md
@@ -61,4 +61,8 @@ curl -H "Accept: application/activity+json" https://your-instance.com/comment/12
 
 Check that [federation is allowed on both instances](../federation/administration.md#instance-allowlist-and-blocklist).
 
-Also ensure that the time is accurately set on your server. Activities are signed with a timestamp, and will be discarded if it is off by more than 10 seconds.
\ No newline at end of file
+Also ensure that the time is accurately set on your server. Activities are signed with a timestamp, and will be discarded if it is off by more than 10 seconds.
+
+### Other instances don't receive actions reliably
+
+Lemmy uses a queue to send out activities. The size of this queue is specified by the config value `federation.worker_count`. Very large instances might need to increase this value. Search the logs for "Activity queue stats", if it is consistently larger than the worker_count (default: 64), the count needs to be increased.
diff --git a/src/en/client_development/theming.md b/src/en/client_development/theming.md
deleted file mode 100644
index 2610b5f..0000000
--- a/src/en/client_development/theming.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# Theming Guide
-
-Lemmy uses [Bootstrap v4](https://getbootstrap.com/), and very few custom css classes, so any bootstrap v4 compatible theme should work fine.
-
-## Creating
-
-- Use a tool like [bootstrap.build](https://bootstrap.build/) to create a bootstrap v4 theme. Export the `bootstrap.min.css` once you're done, and save the `_variables.scss` too.
-
-## Testing
-
-- To test out a theme, you can either use your browser's web tools, or a plugin like stylus to copy-paste a theme, when viewing Lemmy.
-
-## Adding
-
-1. Fork the [lemmy-ui](https://github.com/LemmyNet/lemmy-ui).
-1. Copy `{my-theme-name}.min.css` to `src/assets/css/themes`. (You can also copy the `_variables.scss` here if you want).
-1. Go to `src/shared/utils.ts` and add `{my-theme-name}` to the themes list.
-1. Test locally
-1. Do a pull request with those changes.