This is one of my 'training wheels' weak aura guides. It will recommend what you should cast next based on where you are in your rotation. It is designed to teach you the basics of playing the Enhancement Shaman, not to make you a master. With this rotation guide you will be able to get good enough for normal raiding. This is not going to carry you into heroic or mythic - it will just teach you the spec if you're new to it. From there through following it and gaining muscle memory player skill will hopefully take over and let you push yourself further.
This is just to get you through the basics. Training wheels for getting comfortable with the spec meant for a player just switching to it or just picking it up after a very long break.