Hey guys I'm in the market for a used road bike I can use to get too school, the farmers market and maybe do some competitions if I really get into it. My price range is anywhere from 300-700 maybe a tad more if i find a really *****in deal, I'm 6'2" and weigh about 150-160. I know next to nothing about bikes so just let me know some good used models to look out for or what size i need. I'm not afraid of slightly upgrading/customizing so i would be interested in maybe getting a beater i can upgrade (any guides to building/customizing road bikes?). So just throw me some suggestions so i can start searching