I have 1 switch that should control 3 bulbs. On the main bulb, (the only 1 that works) are 2 more sets or white black and ground. Then on each side are 2 more sets of white black and ground, that should power the two other bulbs. How do I wire this up?

White to white, black to black, ground to ground... always. You need to tie the ones that do not work to the one that does.

I posted another with what it looks like, the drywall is all ready in place, how would I go about hiding the wires.. the contractor tried scamming up and we fired him, so I don't know what he had planned.. can you make a diagram?