Whenever you make a new post on your WordPress blog, you have the opportunity to categorize it. Some people don’t bother, but SEO experts will tell you this is a big mistake. Categories help your visitors navigate your website better. Some people truly depend on them to find what they need. Tags help too, but they’re a bit different. For instance, let’s say you have a vegetarian blog and one category is vegetarian foods. You can post a blog post about a certain type of computers and place it in the Desktop computers category. But the tags you use might be the brand name of computers that it is, such as “Dell, Asus computers.” The only bad thing about categories is if you over do it. If you have a long scrolling list of categories on your site, it can get confusing for your visitors. So it’s better to keep them trimmed back, and possibly create sub-categories instead.
Adding New CategoriesTo add a new category, you can do it from the actual blog post, by clicking Add Category.
Here, you can create a new category and give it a parent category if you want this to work in a hierarchy system, with sub-categories.
Editing Existing CategoriesAnother way to create or edit categories is by navigating to Posts from the Main Navigation menu in your WordPress admin and then Categories.
This takes you to the entire categories page so you can edit and manage all of your categories at once.