Mikey Musumeci on why your hips must stay behind their lead foot, where the DLR foot sits on the hip bone, and how shutting off their posting arm makes the side sweep almost automatic.
Concept-driven look at the DLR hook: the primary heel hand and support hand, keeping the knee tight to their knee, and drills to test how strong your hook really is before you invert.
Drills for resetting the DLR hook and grips when they slip, loading the opponent's weight onto you, and the four points of contact that let you move to X-guard and single-leg X.
Seminar footage of Paulo Miyao teaching his De La Riva grips and berimbolo entries, including what to hold when the belt is not available. Long and unpolished but from one of the best to ever do it.