Open Guard Compendium: Lower Body Guards by Ariel Tabak

Brilliant

Packed with so many details that I will keep coming back to for years. Well worth buying.

Understanding of the open guard game

This is an open guard series based on DLR and RDLR. The given szenarios are szenarios against standing opponents as well as against opponents in the head quaters position. Furthermore you get some transitions to other guards such as x guard and k guard. The teacher focuses on very clear examples and explanations of every techniques and positional aspects. It is about the position first followed by how they get dismantled and how you can counter that to reset or attack. And of course offbalancing and attacking is deeply coverd too. Recommondation!

Encyclopedia of Lower body guards

Ari goes over many different types of guard, but mainly focuses on De la riva. This instructional covers almost everything and Ari gives solutions to almost any problem you could have. It is a great value considering how much info it contains.