All you need is a standard wrench. The first time is never easy if they haven't been off for awhile. You can start by spraying the nuts with WD40 or pb buster on the nut and let it sit for a bit then try again. I just left the nuts off after I took the doors off for the first time so I didn't have to bother with them again. When it comes time to taking the doors off it will be tough to do. Try holding the door like your are hugging it and pull straight up very hard while slowly moving the hinge open and closed.