Passing
Passing can be one of the most frustrating complex skills to make look effortless. If you have ever watched professional beach players pass the ball, then you will think it is wizardry because of little effort it seems to take for a perfect pass to be made. I highly recommend that you go to watch professional beach volleyball players in person. If you think their passes look great on video, your jaw will drop if you see their play live 15 feet in front of you. But I digress, let's start at the beginning and build this complex skill for you.
There are a handful of things that new players do that cause the ball to go everywhere except to where they want it to go. I think the two most obvious things are: standing up with a straight back and swinging your arms too much. The proper stance is not standing up, but rather having an arched back and shoulders rolled forward so that you form a curve in your core and are somewhat squatting. This creates the balance between a solid and spring-like form needed to have a controlled pass. The arms themselves should not be thought of as baseball bats or that the power of the pass coming from them. Your platform, this is what your arms put together are called, is what the ball will bounce off of. Think of your arms as a surface to redirect the ball as opposed to hitting the ball while passing. Younger player will often swing their arms up in order to be able to get the ball higher or over the net. This causes them to not be ready to prepare for a hitting approach, as well as causing the pass to be more unpredictable for your partner to know where to go to be able to set it.
Use these videos as your place to begin learning the complex skill of passing Watch them in order - from the top to the bottom of this page
Foundation
Build your foundation for passing in beach volleyball by watching these videos from Better At Beach and pro player Brandon Joyner. In the first video, he demonstrates and instructs a group about the body position and form that's required among other fundamental aspects of passing in beach volleyball. In the second video, he provides feedback to three different players. While watching that video, consider what you do when passing and hear Brandon's voice giving you feedback. It's highly recommended that you video record yourself passing and reflect on these fundamentals and his feedback. You can seek out Better At Beach for personal feedback with their many personalized instruction options.
The third video is by the McKibbin Brothers and shows three preparation tips for passing that can improve your passing even before you touch the ball. That's why it's included in the foundational section. Passing, like any skill, has a before, during, and after form and the McKibbin Brothers provide excellent advice for the 'before' aspect.
Next Level
It is preferred that you watch the Foundational videos first, record yourself passing and study how you might improve your form and movement. Then watch these videos for a second lesson, if you will.
These videos are a set of 4 from the McKibbin Brothers and give more details, though you will notice the fundamentals introduced are the same: move your feet, have a strong platform, and angle your shoulders toward your target.
Watch the videos in order, since it is a 'Master Class' provided by Chaim Schalk and hosted by Maddison McKibbin. It's chalk full of helpful advice that anyone playing beach volleyball should hope to integrate into their game.