Need advice
Im planing on buying a bike but Im not sure what qualities to look for, when I tried to compare a couple of the ones I liked at trek.com I realized that I have no idea what most of parts are for example: front derailleur, fork, crankset. Does anybody know what things to look for when buying a bike? So far I've narrowed it down to 4500WSD, 7300FX and 3700