Im new to this (as you can probably tell) and Im not sure how to use the fill tool. (paint bucket). Ive looked on youtube and other websites but I can’t find anything. Please help. Thanks 
Hi!
What are you trying to fill? Can you attache some screen shots? Make sure you’re changing the fill color (bottom square). Sometimes I end up changing the outline color by mistake. Also, if you’re trying to color the whole canvas, that won’t work. It only works on layers (circles, bline regions, etc.). To color the whole canvas you just draw a giant rectangle.