Brazilian Jiu-Jitsu (BJJ) is a ground-based martial art focusing on leverage and strategy, allowing practitioners to control and submit opponents regardless of size. Core concepts include a structured positional hierarchy—ranging from the guard to the mount—and utilizing the "tap" system to allow for full-speed training without injury. Essential guides for beginners, including a, "Roadmap for BJJ," can be found at Grapplearts . The Fundamentals of Brazilian Jiu-Jitsu - SHAPE America
Brazilian Jiu-Jitsu is a predominantly ground-based mar- tial art, using the principles of leverage, angles, pressure, and timing, SHAPE America Genesis Martial Arts Basic Brazilian Jiu-Jitsu Guide Brazilian Jiu-jitsu Basics.pdf