Starter Question, please help!

Im wondering if anyone could help me out here. The other day i was driving my 93 100nx (europe spec 1600 i believe). Well, all was going well, i parked my car, got out, then realized i did a shitty job parking, so i hopped back in and BAM, car wont start. Wont even try to turn over, all i hear is a click. I know the battery is fine, cause my lights, heater, and cd player all work. Im pretty sure my starter went out. I just need a few more opinions. Could anyone help me out please?? I work for the military, so missing work is NOT an option, i need answers fast. PLEASE

Your starter needs a lot of power to get it started unlike the CD Player and Heater which works when the car is switched off. I think the main problem is the battery. After installation make sure your alternator is working fine cuz if it doesn't then even after replacing a new battery your car will turn off back again after the whole power is drained.

Your alternator is probably bad and not keeping the battery maintained. Take it to a parts house and have it checked out for sure, they will test it for free. If it checks out ok then you likely need a new battery. Alternators only keep a battery maintained, so if a battery gets too week it can't "charge" it fully.
I bought a cheap battery a while back that works when it wants to. I can boost it with a power pak and the truck fires up and the battery will stay charged for weeks. Other times it won't fire for nothing.

Take some sort of rod and tap on your starter a few good taps. Sometime the brushes in the starter get out of allignment and tapping it will realign them. The starter should then work if thats the problem but that also means its time to get a new starter.

get a manual, there are ways to trouble shoot with out throwing parts at it ..... 12v goes from the battery to one side of the starter solinoid, the other side ot the sol is connected to the started, put 12v to the starter side and if the starter spins, it is basicly ok, when you turn the key you pass 12V or a ground to the small wires on the sol to pick it and pass the 12v through ..... get a manual

and???

Dude ....nobody said anything about throwing parts at anything.....rwood13 can't read? Tapping on a starter is a well known quick-fix to get your starter to rotate a few more times in order to get you started and back on the road.