How do I learn abstract painting techniques?Abstraction has less to do with technique and more to do with the history of abstraction—and your response to that history. I recommend you study the work of the different major styles and understand what they were trying to do.
If, on the other hand you just want interesting random patterns and decorative textures, there are a number of design publications and websites for that.
Carla Attenborough , Creating art before I could writeMost abstract painters are classically trained painters, who then venture away from a draughtsman- like literal representation of things.Some artists go the other way, and push their talents to become phenomenal realists. Ran Ortner is one of my favorite hyper realistic current artists as his work has a meditative and transcendent quality.
1. Composition-There needs to be a focal point usually in a painting. And you need to understand 'The Rule of Thirds'- here is a good link ( It is a photography site, but the visuals are very good ):
2. Application of paint or your medium of choice-
Be aware that you usually want to saturate your canvas with layers of color. In fact, you probably want to cover your entire canvas with paint from corner to corner. And this may be a process that takes days or weeks, with patience and allowing for drying perhaps. Paintings take time. I usually have to work on mutiple canvases at once to fulfill the urge to continually paint. But I move to another canvas as one is drying, and rotate through them.
Ben Rebach , studied at Rochester Institute of TechnologyYoutube and practice. Lots and lots of youtube, mixed with lots and lots of practice. Rinse, repeat.That's the easiest, cheapest, do-it-yourselfiest answer. The rest is getting out there, meeting other artists, joining artistic groups, etc.
Then youtube and practice some more.