Hi! Welcome to the forums!
I prime most (If there's a minor piece I add on after the main priming, I usualy just glue it on without priming it.. If it can wait, I usualy include it in the next primer time when I got more parts). As for what primer I use, I got some industrial type primer (Probably the same asautomotive primer) and they are way better than most of the hobby primers...
As for glue, I use Tamiya Extra Thin cement almost all the time. It also destroys the paint, but it's just to be careful where you apply it... And don't use much cement... I use very little, in fact..
That's my story... More will come I'm sure!
-Huxy