To find items you are looking for can be made with Easy, advanced search & more advanced search. With the easy option simply type in for example "Artist CD" if you are looking for an artist on CD. But sometimes the seller isn't selling the item where you live so to be sure use the next option.
Click on the underscored text below the Search button and you will get a new page where you can specify in cathegories click again on "advanced search" the page will be filled with more search options. The options are optional but to be sure on the safe side you might consider to see if the seller(s) sell to where you live, just a tip "LOCATION... Items available to" set your country and you will only find sellers that sells also to where you live in the result page.