Once you have the QQ/SS foundational basics down well, there are lots of youtube videos on all kinds of turns and maneuvers you can learn on your own.

Two Step Basics - The basic step  is quick quick slow slow.  Note: It is highly recommended to get very comfortable just doing this basic step before going any further.  Just practice going around in a circle by yourself  doing the QQ/SS forwards and backwards until it seems easy to do. There should be no rocking or bouncing. Stay loose in the knees and dance mostly on balls of the feet with a very slight slide effect.

AND always have the feet passing each other.