ABS Off: Feather onto the brakes, or the wheels will lock up, thus losing traction and skidding off. I'm not sure If some cars are able to withstand lock-ups, but mostly any car will lock up. It is difficult to master with a DS3, but it's quite easy to master with a wheel w/ pedals.
TCS Off: Lightly gain acceleration in the middle and/or after a corner. TCS requires you to control your acceleration while negotiating a corner. Usually, when you're in a middle of a corner, you input only a small amount of acceleration, and then lead off from there slowly, to prevent traction loss. However, some cars with different drivetrains, like FWD and RWD, behaves differently when following this rule. Like a 4WD is able to control its wheelspin, so you can input acceleration more quickly, while a RWD can't. Acceleration input is also important on many race cars, like LMPs, as most of them technically doesn't have TCS. TCS also is important when launching your car from a standstill. However, it still follows the same rule. It is easy to master on both DS3 and wheel, but on DS3, it's more difficult.
And I agree with the others. Using Racing tires is not recommended to learn how to drive w/o any Aids, as the tires has too much grip. Starting with Sports Hard tires is recommended, as it has a lot less grip, but gives you a better learning curve.
first thing I do is put racing soft tires on all my new cars when i get them.! so I get sport tires soft or what?
Sports Hards is what I suggest. A bit lesser grip than Mediums and Softs, but the limited grip gives you a challenge, thus giving you a better learning curve.