The navigator is not a bloke but a top class lady navigator. To the best of my knowledge both are ok. Tulip notes or road books are a far more basic type of note, issued by the organisers for everyone. It might say go straight for 800 metres, turn left then right and straight for 200 metres, etc. They have far less details and it forces the driver to get to learn how to read the road and where the road should go.
With pacenotes, you do a recce of the course- once at 60km/h and then at 80. The driver tells the navigator what notes he wants, and if you listen to the WRC they are pacenotes. Different drivers have different systems, but these days they are variations of the same thing. Each corner is given a number from say 1-6, where 6 might be just a slight curve and 1 is a hairpin. Or vice versa. This allows the driver to adjust his entry speed and thus go faster. So you might hear the navigator say 3 left over jump don't cut 100 then 4 right opening 300 big jump stay left. Which means he has a medium corner over a jump, and to run a bit wide as there is probably a rock or dip on the apex. Go 100 metres straight then to a less aggressive corner that opens up- this allows the driver to accelerate earlier and harder with a different line and exit. Go 300 metres straight, but back off on the jump and stay to the left of the road. You also have caution and double cautions in the notes for some issue with the road that means you can't go flat on the normal line, etc. Slippy is generally used when ice might be on the road - especially if you don't have ice tyres on- or some mud etc. It's an abbreviation of slippery which can be a bit of a mouthful when you have to talk quickly and clearly. Most of this stuff you don't get with the tulip notes.
If you want to do rallying or khanacrosses then join a car club with CAMS affiliation (Australia only or their equivalent overseas). My club is the NSW WRX Club and we do khanacross and motorkhana events as well as circuit events called supersprints and is a club for anyone with a Subaru. Any Subaru, turbo or not. A number of us have competed at state, national and even international level and to do that you have to be in a CAMS affiliated club. Having done all that I still love club level motorsport and in its own way is just as enjoyable as the big time. Heaps cheaper too.