There is a lot to learn as a blocker in beach volleyball. This little video shows a training session I did last week working on a defensive technique that is very important to learn as a blocker.
It deals with a situation where the attacker plays a poky just over the top of your block. This is actually often quite easy to defend, if yuo use the correct technique. Without the correct technique, you will probably lose the point every time.
The video includes a simple drill and a game that is good for warm ups.