Hi guys, I bought a 2009 Trek FX 7.3 bike from Craigslist for $300. It's in working order, but cosmetically it needs work. There's some paint scratches and chips. And the tension wires/cables, screws, nuts, and bolts have rust on them.

I plan on repainting it, so obviously I need to disassemble it, but I am a complete bike rookie. I'm afraid of touching the gears, derailer, etc. Are there any detailed tutorials on how to disassemble a Trek bike?

Also, what do you guys recommend to treat the rust on the wires/cables, scews, nuts, and bolts, etc. Thanks.