one problem i have i would love a little more help with is hands i try to practice them alot but i cant seem to draw them well at all, its the way the fingers are done i have real trouble drawing them in motion and keeping them in proportion

especially when drawing a clenched fist, the way the fingers bend i cant seem to get the hang of. any help with that would be soo appreciated
*also* i know this is a drawing page but, ive been struggling so much with colouring

i want to try using some program to colour like flash or photoshop, but i wouldent know where to look. Does anyone know of something like that i can use to colour?
Thanks kindly