How to Create / Use Categories
From Codex
Now that you have WordPress installed, you may want to create some Categories to classify your posts.
- Go to Posts --> Categories
- Enter the required information
- Click Add New Category
Video Tutorial: How to Create and Use Categories
Note: Depending on your WordPress version, the admin screen may look slightly different. However, the instructions are still exactly the same.
References:
1) Categories explained by WordPress Support team.
[http://en.support.wordpress.com/posts/categories/ Link]