Hi melguy,

There's no "magic formula" for studying, as each person has his/her own strengths and weaknesses and will have to study accordingly.

If you were starting from scratch, the general advice I would off is this:

1) Plan on the overall time commitment to span roughly 12 weeks, putting in 10-15 hours per week.
2) You DO NOT need to study every day, and I actually advise against it. Take 1 day (or more at your discretion) "off" per week from studying.
3) Most people will do more effective studying in "small chunks" (2 hours or so at a time) and early in the day (as opposed to at night). Don't emphasize volume, emphasize quality.
4) Studying all day on a Saturday or Sunday is rarely a good idea.
5) Practice CATs area "measuring devices"; they don't make you a better Test Taker; they do point out your "weak spots." As such, you should never take more than 1 CAT/week. The bulk of your time should be spent studying.
6) Speed/Pacing will improve with time and learning/practicing tactics. Just because you know 1 way to get a question correct doesn't mean that you know the fastest way. Be open to practicing new concepts.

GMAT assassins aren't born, they're made,
Rich