the one on gamefaqs is no good, because it promotes tire-mixing, that is the only one i know of, but the best guide is learning from others ;-) monkey see monkey doriftu LoL
Do a search for Cudamans drift guide...... That one is one of the most informative ones around IMHO.....
I'm not sure, but I think Pergatory made one as well.... He is one of the best GT drifters that has ever graced this forum (or any other I have visited)......
Also, if you need help with technique/tuning or anything else (to do with drifting) I will be more than happy to help.... Just send me a PM, and I will do my best to answer your questions.....