I agree with Kevin on finding someone knowledgable to help you. You really dont want to learn electricity while wiring your shop IMO. 220 is just two 110 circuits and a nuetral(typically grounded at the panel). You really need to have a good understanding of standard procedures and electrical codes to do wiring. I have a pretty good understanding of electrical wiring, but I still got my father in law who is an electrican to help me. It showed me that there were alot of things I did not know.