updated Jquery.md (#28625)

I have add more some details and some facts

guide/english/jquery/index.md

@@ -6,15 +6,22 @@ title: jQuery
 
 ![logo](https://upload.wikimedia.org/wikipedia/en/thumb/9/9e/JQuery_logo.svg/250px-JQuery_logo.svg.png "jQuery logo")
 
-jQuery is the most widely-used JavaScript library, and is used in more than half of all major websites. 
+jQuery is the most widely-used JavaScript library, and is used in more than half of all major websites. It's motto is "write less, Do more...!"
 
 jQuery makes web development easier to use by providing a number of 'helper' functions. These help developers to quickly write DOM (Document Object Model) interactions without needing to manually write as much JavaScript themselves.
 
 jQuery adds a global variable with all of the libraries methods attached. The naming convention is to have this global variable as <code>$</code>. by typing in <code>$.</code> you have all the jQuery methods at your disposal.
 
-## Example
+## Get Started
 
-When a user clicks on a button, all \<p> elements will be hidden:
+Before studying JQuery, you should have basic knowledge of these topics:
+  1. HTML
+  2. CSS
+  3. JavaScript
+
+## Example Usage
+
+When a user clicks on a button, all `<p>` elements will be hidden:
 
 ```javascript
 $(document).ready(function(){