Remove welcome page and add URL bar documentation

Author: mr-cheffy

content/assets/user-manual/urlbar/vid.mov

@@ -14,4 +14,3 @@ Welcome to **Zen Browser's Documentation!** Here, you'll find everything you nee
 * #### [[benchmarks | Performance Benchmarks 📊]]
 * #### [[contribute/index | Contribution Guides 🌟]]
 * #### [[security|Security 🔐]]
-* #### [[welcome-to-zen|Welcome to Zen 🔐]]

content/index.md

@@ -0,0 +1,18 @@
+---
+title: Zen URL bar
+aliases:
+  - URL bar
+---
+
+<div align="center">
+  <video width="100%" controls>
+    <source src="/assets/user-manual/urlbar/urlbar.mov" type="video/mov">
+    Your browser does not support the video tag.
+  </video>
+</div>
+
+## Zen URL bar
+
+Zen Browser’s **URL bar** is a powerful tool that helps you navigate the web quickly and efficiently. There's no need to open a new tab or window to search the web—simply type your query into the URL bar and hit Enter to search. The URL bar also supports direct navigation to websites, so you can type a URL and press Enter to visit the site directly.
+
+* Can be disabled in settings or `about:config` (`zen.urlbar.replace-newtab`)