I'm afraid I can't turn everyone into demon arcade PCB 'fixers'! Its not that it's amazingly complicated or anything (although I do still own some boards which have completely foxed me of how to be fixed) I think of it as more of a puzzle that you're trying to solve and I'm afraid that some people just don't seem to 'get it'!!! I will however try my very best to explain it simply, but bear in mind this is just a guide - it's not an instruction manual. There's going to be a whole lot of using your own initiative going on as well...
The first 'step' in the puzzle solving is to establish exactly what is wrong...