Bought a little project 97 2.7

Hello,
I'm by no meens a mechanic and need a little help. I bought a little 97 2.7 4 cylinder for for very cheap to fix up and use as a run a bout around town. When I took it to get it smoged the guy said it was not ready and to drive it around so that's what I did then it threw an engine light. I got a scanner from my neighbors and the generic code was P0505. Ive watched tons of videos about the smog test and drive cycles. Anyways does anybody know of a good honest mechanic in Sacramento who wont rip me off so I can take and get it fixed while I save to get a older 3.4 limited 4x4.
Also,, Where is the best place to get parts on the internet? It has a lot of little cosmetic things that need to be addressed that I know I can fix