Friends!

Here is a Pendulum quickie for you. Get something on a string and begin to practice. We'll do more once you get a yes, no and maybe with your pendulum.

https://www.youtube.com/watch?v=IVh5RPg401g

raymongrace.us

You can search for a .pdf called Letter to Robin for a free, comprehensive resource for learning the pendulum. It is dense, and all that you'd ultimately need. I take a lighter approach.