Frank,
First, there is a lot of information on www.psrtutorial.com

Basically, there are 8 registrations per bank.
You can save almost anything you want to a registration. When you push the Save button at the end of the row of registration buttons, a screen will appear that allows you to select the parameters you want to save.
One of the most confusing aspects of the system is that AFTER you set up a bank of registrations, saving each as you go, you then must save the BANK, or your registrations will be lost when you turn off the keyboard or change registration banks. At the time you save the registration BANK, you will be given an opportunity to rename the bank. If you don't rename the bank, you will overwrite the current registration bank instead of saving it as a new bank.
There is a dedicated button to show the list of registration banks, and you can also push the Direct Access button, then any registration button to get information on the registrations.
Once it sinks in, it is a very simple system, but it is truly confusing at first.
If you have specific questions we will be glad to help, but I suggest you first go the the psrtutorial site and read up on it there.
DonM