Posting this in troubleshooting instead of where I first did.
I went to leave work today, and the remote would not unlock the car. I tried several times. I manually unlocked the car and the lights flashed. Car would not start, it did crank and fire once, but only once. I tried new batteries in the keyfob, and it appears to be ok, the red light will flash when buttons are held. The batteries that were in it tested OK as well. I am getting a ride home to get tools for tomorrow. I have actually been reading a lot about the alarm module, and still only have 1 key for the car. I have had it 2 weeks and was trying to get one from the original owner.
ANyway, I have read all the posts I could find, and learned a lot, but not enough. If everyone could give me pointers to what to disconnect/test. I tried fuse for central locking (it did stop the lights flashing when pulled) but did not disconnect battery (no tools).
The alarm light on the switch panel is always flashing. I am heading home to learn more and get tools, maybe try tonight, probably tomorrow.
So to sum up, the alarm light flashes, and the car will not crank at all, when you open the doors, the lights on the car flash for about a minute.
What can I do, what should I check, and what tools should I bring?
The car battery seems fine, and it is not original, but not new.

Thanks in advance!!!