First of all lets aware our readers with What are Permalinks actually ?
What are Permalinks ?
Well, Permalinks are Permanent Links of your Blog Posts, Pages, etc. They are often called Page Slugs. Like the one you site right now at the address bar, looks like
http://www.WPPanda.com/how-to-change-permalinks-in-wordpress/
This is the Permalink of the Article you are currently reading. The front part “http://www.WPPanda.com/” is the domain name, the rest is the Slug or Permalink.
Permalinks are more explained at What are Permalinks ?. Now, let’s get back to the tutorial.
How to set Pretty Permalinks for your Blog?
Just follow these Simple Steps:
- Login to your WordPress Admin Panel.
- Go to http://www.yoursitename.com/wp-admin/options-permalink.php
- Follow as the Picture below:
. - Select Custom Structure and write “/%postname%/” in the Input box, without quotes.
- Make sure your .htaccess is writeable, Click “Save Changes”
WordPress also explained: Using Permalinks, with different usable structure tags.
We are using the “%postname%” structure tag, this shows directly the Post name after the domain name, as:
http://www.WPPanda.com/[Post-Name]
The Pretty and the Ugly thing !?
Pretty Permalinks are those which are crawled easily by Search Engines and are easy to read by Humans too. Obviously you don’t know what is the stuff behind a link like domainname.com/?p=23 
So they are considered as Ugly ones. The Ones which We setup above are the most prettiest and some more information can be added to the links by using different tags like “%category%” it adds category name the Post belongs to..
So most of them are considered ugly. Users use %author% or %category% to show permalinks with more detail.
