Welcome to the world of detailing! A few thoughts and suggestions if I may from Distinguished Detailing...
You have a great machine to be using. It really is a case of throwing yourself in to having a go , enjoying it and understanding that to accidentally burn / burnish through paint is quite unusual unless you are being very rough and insensitive to what you are doing. So that said, I would have a first go along these lines...
Keep the rpm around 2000 when correcting paint imperfections. It isn't about anything more than allowing the machine, pad and product to work together to do their thing. You are creating heat to work and correct the paint. That heat is your friend - unless you are careless or unobservant with your work.
Keep the pad both lubricated and clean of debris (swarf) . By this I mean after each 2-3 top ups of the product, use a nail brush or tooth brush on the lowest speed to just clean the pad off. Lubricate it again, new product and work it through again.
Pads and product combinations are not a set formula in honesty. With experience, you will mix and match and adjust the speed of the machine to suit your own style and skills. 2200 with a medium cut pad will be a safe starter set up. I would urge you to keep the pad moving across the paint (maybe 3 seconds to cover 30cm areas) , stop after 3-4 passes, wipe the area with a clean cloth and just look at what you are actually achieving. Allow your eye to fall in and start to see the marks and issues fade / diminish as you work.
Of all the bad habits to avoid - do not feel the temptation to lean down on the machine or stay stationary in a single spot. Both dramatically increase the potential to generate too much heat and also leave you blind as to what is happening under your pad. And that is all that matters! lol
Please also remember that (short of burnishing through paint) there is nothing that you can do to the paint that cant be rectified or improved later on. ie If your paint / product is proving too aggressive, you will see tell tale signs of buffer trails (ghosting) that just need a change of pad and product eg moving down to your soft pad and 3500. Drop the speed to 1000rpm and just slow passes back and forth as if you were fine sanding a piece of wood.
Final thought for tonight - do not become too focussed on how others describe different paint types (eg Audi and BMW being notoriously "hard paints") JUst relax, enjoy the time and experiences and learn as you go.
PS remember that plastic bumpers and trims are far more heat sensitive! Move the pad across the paint at twice the speed (eg 2 seconds for 30cm) and keep the touch light and just keep watching what you are achieving as you go.
Keep us in the loop and we will guide you through as you go