Can't edit brush size, etc

[harryllama]

Thanks for the quick response, Rich, and the picture! Very helpful. I count 56 pre-made brushes, visible with the Brushes window (Ctrl-Shft-B), including a green pepper brush... So none of these is editable, it looks like, except that through tool options I can change the size and a few other things (but not hardness). I can also make a new brush, which appears in the same brush window, and this brush can be adjusted as I like, including hardness -- and I can still change the size with tool options. Is that correct?
I don't see a menu choice for saving this brush.
Also, are there other brushes besides parametric brushes?
Thanks again, Harry