The Driving Test Success CD-Rom is the one my driving instructor recommended and the one I used. It was great and really prepared me for the test through doing the practice theory tests, etc. You shouldn't have any trouble with it. It took me about 3 weeks to get my slot for the theory test, but it may be different in your area. As you have already been driving on your own, you may not need too many lessons. You could take the theory test before taking lessons or just after you begin, whichever you prefer. I booked my theory test just after my first driving lesson, so I took it about 3 weeks into my lessons, then my intstructor had me go ahead and book the practical test for a date in the future. Good luck!