"Changing lines mid corner is very easy in this car once you get used to the quick steering and lift oversteer" -BostonDriver
This ^^^ you can almost "steer" the car with the throttle.
The easiest way to learn the lift oversteer is to find a very tight 90 degree corner, not a sweeper like a clover leaf interchange. Quick tight corner, LOW speed 40mph or less will get you there. Accelerate towards the corner to reach the appropriate speed for it (or gently brake on your way in on the straight) enter the corner 0% brake 0% throttle and just snap the steering wheel in one precise movement to steer through the corner. You will get a bit of slide easily with full ESC ON. This is NOT the time to counter steer or correct with steering, just point the tires through the corner Get back on the throttle to straighten her out.
This is not a RWD no amount of pushing it through a corner will make your rear kick out, in the same vein counter steering like a RWD drift will unsettle the car and get you into trouble quick (your rear will all of the sudden find traction, with your front tires pointed the wrong way). let off the gas chuck it get back on the gas to straighten out. Steer the front wheels through the corner.
Lift off over steer is just that. You lift off the throttle to initiate the oversteer. It is a way of tightening your line. It is easy on a quick 90 because you are essentially just quickly tightening your straight line around a 90 degree angle. Lift overseer is hard/not-as-usable on a long sweeper because you typically don't need to tighten your line all-of-a-sudden, you have a nice long curve and a long even line. Lift oversteer could be useful on a tightening corner right at the last bit where the radius decreases and you need to "cut" in.
For the love of all safety do this on a track, or in some sort of controlled environment, rural and scoped out, or cones in a lot or otherwise, freeways are a bad idea. Find a corner that is so tight it is slow (35-40mph), and keep that ESC on full!
It is easy once you feel it a few times and is only needed in tightening situations.