Go for it Ange,
I copied and pasted below from the SAU website...

Information for Beginers

Personal Requirements
- Safety helmet (AS1698 standard) in good condition (ie. free of dents and scratches).
- Gloves are optional.
- Leather or suede footwear must completely cover the foot and be firmly fitted. No sandals or thongs allowed.
- Driver apparel must cover the body from ankle to neck including up to the wrists. Long sleeved and flame-resistant clothing is mandatory. Wool is best but cotton overalls or trousers and shirts are also suitable. Race-type overalls are not necessary.

Driver Training – Is not absolutely required, but SAU recommends you make your first track day a driver training day. There is a lot to take in and you wont post a quick time on your first outing. Driver training sessions won't be timed and you will only be on the track with other driver training vehicles. You will have the chance to have an instructor with you, this will typically be another club member who has some track experience. Driver training costs slightly less than the normal sprint days (You wont get to compete in the super sprints at the end of the day)

If you choose to 'not' do driver training as your first event, just place yourself in a slow group and spent the first half of the day following slower cars and learning the racing lines before trying to go off on your own and improve times.

Vehicle Requirements

- Fire Extinguisher (AS1841, AS1846 or AS1848, Minimum of 900grams) Securely fastened with a metal bracket and reachable by the driver from the drivers seat.
- Valve Caps (Preferably metal)
- Boot / Cockpit - Must be free from all loose articles
- Headlights - Any forward facing glass must be covered by tape or contact (This only effects R31 and R32's in the Skyline Range)
- Roll Cages - Must be CAMS approved
- Bonnet Catches - All rear-hinged bonnets must have an additional independent non-flexible strap fitted. Permanent straps/pins attached to the bonnet are not necessary. It is acceptable to tie the bonnet down with light rope. Bonnet Pins are also accepted.

Track Etiquette

Passing
It is the obligation of the passer (faster car) to make the pass. Do not erratically brake or move off the racing line without first signalling to the faster vehicle behind you.

Signaling
If you want a faster vehicle to pass you, signal with a clear hand pointing to the side on which you wish to be passed. If you want them to pass on the left, then signal over the roof of your vehicle. Do not use indicators to signal passing.

Flag Signals
Flags will be used at designated points around the circuits.

Yellow flag: The yellow flag signals a situation of danger ahead. Drivers must slow down and show extreme caution. Drivers may not overtake other vehicles until they have passed the green flag.

Green Flag: All clear signal. It is used at the end of the danger area controlled by yellow flags. Drivers may continue on at race speed.
It can also be used to signal the start of a warm-up lap or practice session.

Blue flag: Overtaking signal. The blue flag informs the driver that he is about to overtaken by one or more faster cars. When the flag is waved, it draws the driver’s attention either to the closeness of the car about to overtake him, or to the high speed at which it is approaching. The blue flag can be shown motionless when the faster car is still some distance away but approaching quickly.

Red Flag: Stopping the race. The red flag will be shown at all posts on the circuit when the Clerk of the Course has decided to stop the race or practice session due to a hazard effecting the course. All drivers must stop racing immediately and proceed to the pit area. Drivers must exercise extreme caution and being prepared to stop if necessary and be aware of the possability of support vehicles on the track.

Black Flag: Return to the pit area. The black flag is usually shown at the Start / Finish line by the Clerk of Course or his marshal. The flag will be shown whilst your vehicle is being pointed at. This informs the driver they must return to the pit area immediately and report to the Clerk of Course.

Chequered Flag: Denotes end of session. Use the remaining lap to cool the car and return to the pit area.