lost instuction manual :( need help {STREET FIGHTER}

[dubs6996]

i lost my instuctions manual on the bus...and i only know how to active 1 out of the three categories A-sim ... i dont get these fighting styles im new to this game and it obsets me that the comp whops me eveytime can someone break it down for me what the difference is between A-ism, V-ism and X-ism is? i need to be walked through HOW you actually ACTIVE them in combat.
thanks alot guys,
- DuBs - :cool: