First of all, buy Gran Turismo Concept 2002 Toyoko-Geneva. Complete all licence tests (doesn't have to be completed in a Gold time, it can even be a Bronze time - as long as you finish the licence test it counts) and win all races. After you have done this, the game will give you an option that lets you transfer all your money, which is 10million credits, and all licences onyo your GT3 game save. This means that you have every single licence in GT3, so you don't have to do any tests, although all the times are bronze, but they are still licences. And since you have 10million + credits, you don't have to buy a cheap car to start either, which means you can pretty much start at any point in the game you wish!
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