When you think about it, there are only two basic moves that you need to learn.
how to get a square from anywhere on the cube, to either a central point on one face, or to one corner of one face.
Years ago I had instructions to do just that, but to be honest, if you give the top a 45 degree twist, and the bottom row a 45 degree twist, and here is the clever part...
Take a tea spoon and insert it into the gap, and twist... and it all comes apart, and you can reassemle it in half a minute.:augie