You must do some research on how combos work. I don’t play SF anymore but…
1.easiest way to shoryuken is to use the input buffer of the game and hold forward and then to shoukd do a fireball motion.
2.cr.m punchx2 to cr.hk are all links.
3.Do a medium SRK then FADC(Focus Attack Dash Cancel) on the first or second hit.
I made a crappy video for a friend but it’s sufficient, http://m.youtube.com/?reload=7&rdm=ticq76mn#/watch?v=yqxy3SpUEU8&feature=youtube_gdata_player
Even though you are on stick, instead of pressing L2 you are pressing MP and MK, concept is still the same.