The easiest is probably getting the stuff off of Ebay. I bought a frame/fork, headset, seatpost, bars, cranks, wheels from Ebay, then I bought a new BB and chain from my lbs. The frame is a 70's steel lugged which was in almost perfect condition for a good price. If you are going to ride mostly on roads, I would recommend a road frame and not a track frame, and build a fixie which you can ride on the tracks for fun as well. You wont need to cut and replace the drop outs either.