Welcome to GTP bobby!!!
getting sideways is a matter of practice, patience, and spinning out.....ALOT!!! You'll learn after spinning out of control, hitting walls, etc. a few times. That is, if you set a car to drift and use sims.
Or you could try this: Set up a car around 400-500 hp fully tuned (the Altezza, Clio Sport, and Elise are good starters), medium slick to slick tires for starters, set the ASM to 1 or 2, and the TCS to 5.
Set up your suspension REALLY stiff with a 4.5/2.5 camber and -2.0 toe in the rear. Now pick a track like Deep Forest, and tear around it like you are grip racing EXCEPT you want to throw yourself into corners REALLY hard.
You won't get sideways, but this gives you practice in drifting. Every lap, it will get easier and easier to do this, so roll back the ASM, then TCS, then start lowering the grip quality of your tires until you feel comfortable high-speed drifting with no traction.
A little time-consuming, but worth it if you want to drift like you would see in the videos pepole post on this site. Good Luck!!!
