Hey man, i have 2 drifters (Yokomo LCG/HPI Pro-D), and one more (Yokomo SSG) on the way - it's pretty big where i live =)

Have you got the car setup well now mate? HPI T-Drifts or the Tamiya Driftechs are the tyre of choice here...

As for your diffs, it's kinda a personal preference, but to get started, it's easier with a locked rear, and open front diff - the front diff works well when it's firm, but not loose or too tight. Some people find running a one way up front works well for them, but i hate it - you cant use brakes, and have to use neutral throttle instead to get the same effect, although it is a decent setup if running on a very very tight track.

Get some toe-out up front, and some toe-in at the rear - this gives you more steering up front, making the car easier to correct on big angle, and toe in at the rear makes the car's transition less twitchy.

Generally you want softer suspension in the rear to the front, and wanna be slightly higher in the rear than the front too, but again - this will come down to your driving style...

One of the most important parts to drifting imo (when you get a little more serious about it) is your throttle curves/deadband and exponential settings...

For example, i like my brakes to come on fast and strong, and lock right up as soon as my finger goes a hair-width past neutral, so that all 4 wheels lock, and i use momentum to enter most corners...

I also find that a smooth curve to the forward throttle range works very well for me... I have it ramped, so that i have a fairly slow and consistent travel through the throttle range early on, then it ramps up to full power very sharply from about 3/4 throttle to full throttle...

You will find that you'll use steering only very minimal compared to throttle when it comes to controlling the car...

You mainly need to keep in mind, that countersteer isn't used as it is in 1:1 drifters - the weight isnt there to allow full countersteer right the way through a corner... Your throttle is the main key to controlling your car, and steering is just there for quick corrections to the direction, but throttle is what will get you where you wanna go more than steering...
I find i don't use any countersteer at all through 99% of corners unless i have too much angle and speed...

The more i watch newer drivers, the more i realise the fact they are trying to drive it more like a real car than an rc one... all principles are basically the same - it's the steering/throttle that throws them off, as they're trying to countersteer in a corner when it isnt needed, so they end up crashing out to the other side of the track =)

Hope that helps you some man, drifting can be a whole lot of fun when you get good numbers going, it takes time, but it has taken off here quite well =)