Hmm, i found the best way wa to gain experience in RL, which i had before discovering lfs. If you drive, find a dirt road or a paddock and drive a rwd car around for a while and feel how it responds.
If you dont drive, start very slowly, and if you ise the keyboard to steer dont, usea mouse if you can. Then speed up until you get to the limit.
I could write a guide, and might one day, but why not explain what exactly your problem is.
I assume your trying to drive it like a fwd, so your having trouble with oversteer, then like people said, putting power down through a corner, after a certain limit, will cause the rear wheels to spin, this will cause the car to slide ("drift") to remedy this, you must take the power off, or steer away from the turn, sometimes both, and sometimes the opposite of one with the other.
It takes time to understand how the car is going to react to certain inputs and forces, but when you do its very satisfying.
For me fr/mr and rr are the only way to drive, fwd is boring and without passion, and 4wd, while it has its advantages, on a dry racetrack, a rwd is the way to go, imo.