I was in a similar journey while working on my startup ToonClip.com which deals heavily with graphics. There are 2 different areas. One is the geometry and th

I was in a similar journey while working on my startup ToonClip.com which deals heavily with graphics. There are 2 different areas. One is the geometry and the math. Second is the libraries that make the graphics. What was fun for me, was thinking of an idea eg. make a circle move along a given path. Then evaluating the different libraries to see how to achieve it. Then, when the libraries themselves needed modification, jump into the mathematics, geometry and algebra. I did not read books but just looked up articles and videos that cover the topics of interest. Its a lot of fun that combines math, art and programming. Wish you lotsa success and fun :-)