Easy drift points
Stay behind a car to get lots of drift points.

Easy style points
After you unlock the oval drift track, go into "Quick Race" and choose that track. Then, race around it using the handbrake to powerslide into the corners. Depending on how good you are, you will unlock rewards every time you fill your meter, which does not take too long. Also, go to quick race mode and choose any circuit. Set it to five laps with maximum cars on. Then, just get near misses in a row to get a large amount of points. Once your reputation goes up you can make 20,000 points in one go around.

Use rims that normally don't fit
Certain cars can only fit so big of a rim. For example, the Miata can only fit 17s, but if you get a car like the Skyline put 20s on it and trade it in for the Miata. The Miata will now have the 20s that the Skyline had in it. Do not try to install any other rims on your new car because the rims will go back to the maximum sized allowed.

Shoot smoke from nitrous
To make nitrous shoot out smoke, put your car in neutral, or at the beginning of the race press Nitrous.

Shortcuts
Look for alternate routes on your in-game map while driving. These can get you ahead of an opponent easily or shave off seconds on your timer. They will look like another road on the map, but sometimes are narrower. Most of the time these shortcuts will be hard to see or take, and can be extremely risky