On the left of your screen is a list of categories. Once you click on a category, you will see all the items in that category (LP's, for example), but you will also (on the left again) see yet another list of the sub-categories. You can then click on a sub-category to search only the items applicable to that section (such as Classic Rock or Classical LP's). When you're done looking, simply click on the HOME link to go back to the complete list of categories.
In addition, if you'd like to search for a particular artist, item, or key term, just go to the STORE SEARCH box above the categories on the left. Enter what you're looking for to see listings that match. Feel free to email with any navigation questions!