Read the Bible of Flying - Stick and Rudder by Wolfgang Langewiesche. And try some videos like these. Stick to tail draggers, you will thank yourself -
Fly Low, Take Chances...
The b2 button on top of the stick (where your thumb would go) works well for brakes.
I love this flight stick (I also have a series S) very happy with it.
The only problem I have is that, when I try to change the button assignments, it just doesn’t take. But, it doesn’t matter, because I’ve grown to like the default button assignments a lot.
I highly recommend buying a wireless mouse/keyboard combo. I also recommend buying one of those things people use to put their laptops on in bed and then put the HOTAS and mouse on it (Laptop Bed Tray Desk, SAIJI... https://www.amazon.com/dp/B082YW2SZX?ref=ppx_pop_mob_ap_share)