i have a 95 camry.it was running fine, then radio quit,fuse is fine. 1 week later,after gassing up, car would not start back up. all the dash lights, wipers,signals work.when i turn the key,nothing happens.what could possibly be the problem. i have no idea where to start looking.

Unless you're in a position to solve this problem by seriously working on your car, bring it to a mechanic who has good recommendations and let him solve the problem.

could be (replaceable) copper starter contacts in the solenoid