Quote: Never touch the front brake while the wheels aren't dead straight, even at walking speed.
Gotta disagree with this one Rich. Using brakes in combination is a necessary skill to achieve the best performance. The technique of "trail braking" involves use of the front brake while in turns. Too much back brake can cause a traction loss. In fact some times, I don't use the back brake, just the front. Of course you must always be aware of any potential traction compromising situations.