I've been getting in to cycling for the past year and have already acquired a couple of bikes. One is a Panasonic Mountaincat for my longer recreational rides, and the other is a Wally World fixed gear for my mile ride to and from work. I've had experience in basic repairs (adjusting brakes and derailleurs, installing brake cable, replacing tires).

I picked up a men's Huffy 314 road bike at the thrift store for $15 that needs a bit work. Tires were dry-rotted and it needs new tubes and rim tape. The cables and chain also need to be replaced. Oh, and it doesn't have a front derailleur or stem shifter for the missing derailleur. The few things that it has going for it are the frame is in good condition, the rear derailleur (kinda) works, and both of the wheels are pretty dang true.

My goal is to get this thing ride-able but not drop a lot of money. Obviously the tires, tubes, rim tape, chain, and cables will have to be new. As far as the shifter and derailleur go, how available/inexpensive are new parts, and where would I go to find them?

Thanks!
-Jeremy