A few observations: (1) Don't skip the textual explanations; (2) My favorite part is the wheel and spoke analysis; (3) Never stop improving your biking skills:

A few observations: (1) Don't skip the textual explanations; (2) My favorite part is the wheel and spoke analysis; (3) Never stop improving your biking skills: it isn't just your legs; use your whole body! P.S. For offroad riders (i.e. mountain biking): some things to look up if you don't know them: the "attack" position; the "cockpit"; pumping; row and anti-row motions.