Hi,
The forum is pretty good for new builders. If you are apprehensive about building something, start with something simple, maybe even a Quickie. You will probably be surprised at how well it can sound with the pjccs (the upgrade board) and a few component swaps. I have less than $200 invested, and love the sound. As far as soldering, one thing that really helps is to get a container of flux. After you make a good mechanical connection with a wire to a terminal, apply some flux and then the solder. The solder joints should be a bright, shiny color. (Some solders include flux already, but for it is easier to get good results soldering with separate flux IMHO). After the build, there are continuity and voltage checks. If you take your time building it up, this should be an easy part (though if you run into an issue on the #'s, Doc B can usually figure out which components to check ! 8)
Dave