Key is to ask questions here, do research online via u tube and other resources (http://www.pinrepair.com) to learn basics like soldering & fixing ect.. Get tools that make the job easier like magnetic nut drivers along with solder iron and sucker/desolder iron. Try not to work on the machine while it is powered on until you get experience and know what you are doing. Unless you are running things in test mode obviously. TAKE YOUR TIME especially when fixing something for the first time rushing through things will likely cause more problems then you were originally trying to fix.

If you are taking parts off take pictures so you know the order in which they get put back on. Hope some of this helps you. I like to work with my hands (opening the door for BD here) and found that while sometimes fixing things on a pin can be frustrating I actually enjoy the process especially when the problem is fixed.