Hi : what fleetfingers said is so true. Here is one more thing and its different with everyone. NO hard and fast rules but, go over something 4 times is helpful, going over something 7 may even be more helpful, but going over it 100 times in a row is not. Everyone suffers from brain fatigue. After awhile our brain gets goofy and where actually doing more harm than good. Find the maximum amount of time you can spend on something and then do something else. Let your brain absorb what you just learned. Keep up doing your thing. Cheers, Becky