Welcome to Mbc
Hey Quan..Welcome from Eno (Down Under)....Mbc is a great forum for those of us who need help, information and better ways to do things..check out the Photo Gallery to get an idea of what you may want to build, use SEARCH for specific problems and post some pics so we can see your progress..usually the mountain bikes with the diamond frame dont give you many problems but as usual electrical and tuning stuff sometimes becomes tricky..Good luck..ENO (Oz)