I know, it's a bit overwhelming (I was there- refused to remove the carbs for a year).
Look at it this way, you've done it once, you can do it again. And it'll be easier the second time around.
But if you don't start at the beginning, you'll just be chasing your tail.
Go and do a search for shimming the points plate (might be in the faq). That'll make life easier when timing.
The advancer mechanism is the shaft that the points ride on, the weights are on the back side of the plate that you can't see.
the carbtune is attached by removing the brass screws on the carbs. Check out the manual, it'll save you a lot of grief. Though doing a carb sync is kind of pointless unless everything else is running well.
spwg