Follow these steps and prepare to split or accidently kick yourself in the face! If followed, these tutorials will greatly impact your tricking for the better. Best of all, it's not just for tricking; The flexibility information contained here can be applied to many sports. Anybody looking for a free, comprehensive flexibility resource that's well layed out and full of life: Look no further.
I used five books as secondary sources to write up these flexibility tutorials. My most valuable resource was Thomas Kurz's Stretching Scientifically. It's an EXCELLENT book and I think I ended up underlining at least a dozen sentences per page. I encourage everybody looking for an advanced stretching resource to seek it out. Anyway, here are the fancy shmancy references to those five books.