Rotors? Is it a flying car?
Edit, ah americanism... you mean disks right? as in disk brakes?
Changing pads is easy. Disks fairly tricky as you'll need to torque it all up and they're on proper hard. Calipers are easy enough to change, but again you need the correct torque settings. Finally, bleeding is OK, but you need a buddy to do it with. Do you have the right gear? Jacks, axle stands, torque qrench, bleeding kit?
To be honest, mate, I'd not start with brakes on a car if you're thinking of getting 'more mechanical'. It's not an area where you want to make a mistake!!! Put it this way, I used to have a little 50cc bike with disk brakes when I was younger. I dismantled the caliper and cleaned it out OK, but when putting it back together, I overtightened the banjo bolt (didn't have a torque wrench or manual) and threaded the caliper. This means the front brakes were ruined. This sucks even more when you live on the top of a hill and the bike store is all the way down at the bottom, and in the middle of town.