Hes right, a dirty condenser/evaporator can lead to very poor performance of an A/C system, your condesner rejects heat from the system, so if if its clogged it cant expel heat very well, which in turn wont allow the system to cool efficeinty. If you do need to clean it its going to be kind of a...

Compressers can take liquid, just not much of it. One can cant get sucked in quick enough to do any damage, HVAC techs charge systems with liquid all the time, but they can throttle it in with their manifold gauges. You should be fine to hold it upside down becasue the liquid refrigerant is...

Go out and buy a recharge kit and like 2 cans of R-134a. I recently charged my talons up, if you get a kit it will come with a guage, hook up this guage to your low side labled (L) line of your AC and have your car running with AC on high for it to take a reading. Depending on your charge kit...

Im beating your car has R-12 in it, i am not for sure though, usually early 90's car ran R-12 which is illegal to buy and has been out of production since 95 or so. You might have to have your system retro fitted for R-134a which may cost some coin.

Putting a bigger fuse in would allow more amps to go to the motor then designed for, in turn if your motor was stuck youd burn it out really fast that way.

On the topics of power locks not working, mine didnt work when i bought the car and i checked the fuse, it was burnt, so i put a new one in, it doesnt work but sounds like its trying to, my guess is that the motor is seized and the guy before me kept trying them and finally blew the fuse when it...