Front crawl is the fastest and most efficient known way for swimmers to move across the surface of the water. Mastering it, however, takes time and effort as it requires a complex series of moves involving the whole body. If you are serious about improving your front crawl, we recommend taking advice from a coach as receiving direct and personal feedback will accelerate the learning process.
Meanwhile, the following guidelines written by Terry Laughlin, founder of Total Immersion, will get you started.