diff --git a/wiki/firefox.md b/wiki/firefox.md
index 2b3bded..8275830 100644
--- a/wiki/firefox.md
+++ b/wiki/firefox.md
@@ -42,6 +42,14 @@ They can be removed and configured under `about:config`.
   - [Tree Style Tab](https://addons.mozilla.org/en-GB/firefox/addon/tree-style-tab)
     shows tabs like a tree. This is especially useful if many tabs are used.
 
+## Useful configuration
+
+To disable the telemetry of firefox navigate to `about:telemetry` and (if it says
+enabled) click on `enabled` and disable all the options.
+
+To disable ads from firefox navigate to `about:config`, search for
+`browser.newtabpage.activity-stream.showSponsored` and disable all upcoming results.
+
 ## Add a new search engine
 
 You can add a new search engine with the addon `Add custom search engine`.
diff --git a/wiki/windows10/windows10.md b/wiki/windows10/windows10.md
new file mode 100644
index 0000000..447bf37
--- /dev/null
+++ b/wiki/windows10/windows10.md
@@ -0,0 +1,15 @@
+# Windows 10
+
+[Windows 10](https://windows.com/) is an operating system developed by
+[Microsoft](https://www.microsoft.com/).
+
+## Telemetry
+
+Windows 10 has a `Windows Compatibility Telemetry` process running in the background.
+To disable it follow this [guide](https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/permanently-disabling-windows-compatibility/6bf71583-81b0-4a74-ae2e-8fd73305aad1):
+
+- Start the `Task Scheduler`
+- In the `Task Scheduler` navigate to the path
+`Task Scheduler Library\Microsoft\Windows\Application Experience`
+- Look for the `Microsoft Compatibility Appraiser` on the `Application Experience`
+folder, right-click it and select `Disable`.