Keep the search engine optimization process in mind!
By now, your list is probably pretty full of very competitive, single-word terms such as "MP3" or "books" or "computers" or whatever. Scratch them. This might sound harsh, but if you're a novice, you have no chance of achieving a top listing under such terms. Even many (dare I say most) professionals tend to avoid them, as they are extremely competitive. There are hundreds of thousands of sites targeting them and even with excellent search engine optimization skills, they are very tough to conquer. What you should do is to narrow it down a little.