Is it true that ab fitness lessons the final step to a six pack?

No: P90, p90x, etc. And several other in-home dvd programs attempt to engage all muscle groups to stimulate growth, increase aerobic capacity and improve endurance. They also offer nutritional guidance and suggestions about hydration & rest, all of which, taken together, are essential to burn enough fat so that one's six-pack becomes actually visible! it is worth the effort!