#2
First, theres a setup thread in this form, so try goin there. But what I do is take all the strings off (down tune them ALOT, then cut it in the middle, pull them off the tuners, and out the bridge) then clean the guitar, fretboard, etc. Then, pull the new strings through the bridge, then loop them around the tuner two or three times, then tune it to where theres no buzz. Repeat for all strings, then tune up. Tune a couple more times, then cut off extra sting. If this wasnt any help, google it or go to daddario.com, theve got an awsome video on it.
Clapton is god, accept it.
#3
Google: How to restring a guitar

There are many sites and videos out there. Look at some of them and decide whats best for you. As long is it stays in tune ... it works.

Good luck.
--- Joe ---
77 Bradley LPC || 07 PRS CE22 || 11 PRS MC58 Artist || 95/02 Fender Strat || 99 Gibson LP DC Std Lite
06 Ovation Elite-T || 12 Martin GPCPA4
Boss GT100 || Peavey Stereo Chorus 400 || Peavey Bandit 75 || Roland JC77