Hi Adam, I recommend going to one of Drift UKs practice events. friendly instructors available there all day to give you a helping hand. Terry is a top guy. check out
www.driftuk.co.uk for info or
www.driftskool.co.uk 
An LSD is essential for drift, I would reccomend a good 2 way aftermarket LSD. The Kaaz ones the driftworks boys are selling are just the job at a very good price!