Abstract paintings come in all varieties, from completely non-referential works to those that are abstracted from reality to those that are inspired by an emotional state or concept. I love them all, and I don't tend to be too terribly snobbish about the labels. I love looking at other people's work and I really really love reading their tutorials or viewing their tutorial videos on youtube.
Awhile back, I began to assemble abstract paintings and tutorials on a pinterest board so that I could find them when I wanted them. As it grows, I may begin to add sections, but for right now, it's one big glorious mess!