what would I need to have in order to open a used book store aside from a place and a lot of books
Insurance policy - for accidents, for fire, vandalism, etc.
Security system, you know, to keep costs down from theft, vandalism, etc.
Financial setup, eg, cash register, credit card terminal, etc.
Business license, if you need one in your city, if not, then a DBA at least with your state government, check your local dept of commerce they can probably help guide you on this one, as it's a lot of paperwork.
Off hand, that's my first list of stuff you'd need to open a used bookstore. Good luck.