First of all get some lessons, preferably in your own car so to get a feel for how it reacts and if something unexpected does arise then you have an instructor there to help.
Secondly I would stick to stock tyres for now, these are far more predictable than race tyres, grip levels are lower and so is the speed when they do start to relinquish their grip. Remember more speed means less time to react.
Thirdly, if you enjoyed taking your car on the track then I would seriously think about pads, not only will they last longer but your braking distances will improve and few things keep you out of dangerous situations better than brakes.
Good luck and I hope you are still smiling after the half a dozen goes and please keep a cool head, something that's hard when others keep passing you.