My biggest tip would be make sure the that the pad covered in cutting compound is in contact with the car when you turn it on!
I covered an area of about 8m2,cars,house Windows,all over me
I haven't got enough experience to give advice,Ads or Brian would be the Goto people.
I got a lot of advice from Ads and the guys from clean your car.co.uk gave me a detailed printout of what pad to use with what product and in what order which was a great help.
Get as much good advice as possible,within an hour you will be cutting like a pro👍
The products do the work,the Sonax cutting kit was superb,I can't rate it highly enough,I finished the car with FK1000 and will hardwax it at the end of the week.