need help with sprite animation

[zeroxskater]

hey everyone well im developing a game, and i need to redo a couple of things before i get to far into the game. the biggest thing is sprite animation.

i have been using a code that is a timer and when a timer his a certain time it changes the image but that takes up alot of code and is inefficient. i have been looking for tutorials on this but had no luck, so can someone point me in the right direction?