Well it's certainly no joke driving a tractor, but then it all depends on what you're doing, certainly wana try n start on something basic. Start simple by just driving round then try your hand at rolling, harrowing, something slow n steady n learn how to manouvre such a giant lump, then you can progress onto more complex (as it gets in terms of tractor driving) mowing, tedding, rowing up, all that jazz. Then go for your test, it's a piece of **** really, just mostly common sense.