I use strictly AirDry paints and have for several years now. I currently use several different brands myself and have tried almost every brand on the market. The one I would recommend for beginners that is easy to use, cost friendly and great quality are Waterborne. I did make a tutorial to go along with these paints and it was created with those new to using air dry paints in mind.
Here is a link to the paints to go along with my tutorial and a link to my tutorial. If you don't want to purchase those there is also a link to just the paints and a free written tutorial for the paints :)