What do you need to know to paint cinder block
To be honest, it's tough to make cinder block look like anything other than, well, cinder block. I've seen people rag-roll it, sponge it, marbleize it, & mostly it looks like you're trying to cover something up. If you have some artistic ability, you could paint a faux picture on the wall of a beach or mountain setting or just about anything your mind can come up with. You might want to consider skim coating the wall to make it "flush" and flat just like regular drywall and then you could simply paint it. Maybe do a search on YouTube to get some ideas also.