Tab is the 'Fairy Wheels' one puts on kiddies bikes to get 'em started. It's possible to do a lot of biking with them on, and they're a Good Thing for what they're for, but there's so much more scope when they get taken off. Advice..? Get started on Tab, but get stuck into the 'standard' notation when it comes up, as it will. As a beginner, the 'standard' notation starts off at beginner level, so it's easy. As one progresses, it gets assimilated naturally. Don't be frightened by it; it's just like the way you learned to read, or do arithmetic (you did learn to read and do arithmetic, I trust..? ).