Here is an example of some quick paintings I have been doing on sheets of Yupo paper. It is polypropylene sheeting that you can use oil paint on without any prepping, great effects with watercolor as well. The texture of the stuff is also very smooth and it allows you to pull off colors easily with minimal tinting of the surface.
Aside from that I have been reading lots of reviews and articles.
Brooklynrail.org and Hyperallergic.com are great sources