QUOTE(devilpaint @ Jul 29 2007, 09:46 PM)

do you know whats involved?
are you doing the big bike test or an A2?
can you do an emergency stop & recover the bike in the correct manner?
do you know how to use slow riding skills in order to do a U turn? do you know how far down the road you can ride on the U turn before you need to do an extra lifesaver?
do you know what a bloody lifesaver is?
[...]
Indeed.
I think that going straight for the test is foolish. Having said that, there're many books that may help you, if you want to try out the self-taught route (but beware, there may be a gulf between reading, on the one hand, and understanding / prioritizing / experiencing).
I think the least you've got to do, is to take a 1 or 2-hour assessment with an approved instructor, once you think you're ready (or almost), and he'll tell you, whether you're really ready. (Besides, you can get assessments for free, so why don't go for one?)
I've tried the self-taught route, and I've had numerous problems, amongst others:
- Falling badly trying to practice the emergency stops on my own, in the wrong kind of terrain, and breaking my wrist
- Learning the hard way that in roundabouts you must give way to the right (which you don't see until you're there) and not only to the front (which you can see and may fixate upon as you approach the roundabout)
- Learning the hard way that you can't easily beat side winds when at the same time it's raining, etc
On the other hand, if you go the school route, I would recommend you try and use your own bike for practicing and taking the test, otherwise, you may end up training and taking the test on different bikes, which is not ideal, or having to repeat the test on your own bike after having failed on the school bike (if you haven't paid for a guaranteed pass scheme, that is, and even so).
I think that preparing for the test must be taken seriously, that's all...