Don't forget - PROCJAM has a lot of free resources for you!
Over 2000 Creative Commmons 3D and 2D art assets.
Hours of talks about generative software spanning four years of PROCJAMs.
Community-authored tutorials available in English, Spanish and Arabic.
We'll also be launching a Game Maker Starter Project later this year!
We also have a big list of links to tutorials elsewhere on the web, but I broke it and I haven't fixed it yet. Post your favourite resources in this thread to help everyone find stuff to help them jam!