I think the first time I played on SNES when you hit low HP or the Doom Counter it finally pops up in text to tell you what to do. I had someone with me at the time who told me the buttons and I got it pretty well. After that I had a emulation of the game and learned how to do it on the arrow keys which were a bit tricky when doing half/full circles and the like for his later blitz moves. It kinda helped to play a few old fighters like street fighter 2 and the Dragonball Z fighting games for the Snes to get the hang of doing those Hadoken and blast roll moves.