Cranks no start, security light blinks, but goes solid when key is turned to on

I tested every fuse wire on my car and it does not start. I realize this is a anti-theft or immobilizer issue. I would really appreciate an exact way or ways to disarm, reset or what have you so that I can get back to work which I've been out of for a week and a half now. I don't have the money to have it towed or pay Nissan dealership $100.00 or whatever to reprogram it when I'm pretty sure there's a way that I should be able to do it myself if just given a more specific answer as I've read through I believe a hundred different ways and tried them all with no satisfaction to getting my car started. I greatly appreciate anyone's effort to helping me out. Thanks in advance.