So how steep is the track? Is it wood?
Anyway here's the tips...
If you've got new tyres on your bike make sure that you wear them in before riding on the boards. Some new tyres can be a bit slippy, so riding in anti-clockwise circles in a car park for 5 mins sorts them out. The more air in the tyres you have the more slippy they are too, so you might want to go closer to the minimum pressure than the maximum.
When riding the track for the first few laps you'll be tempted to lean into the banking! You should relax, just imagine that you are riding a sunday club run.
Get into the habit of holding a line (and not wobbling up and down the track like other newbies) as soon as you can. You'll find you become much more popular as people don't mind riding close to you. To do this look at the lines in the wood of the track, or the other lines (blue, black, red) and try to steer a straight line based on these.
Remember that its no harder to ride at the top than at the bottom as its the same gradient all the way up. At the top you'll have to hold a higher minimum speed than at the bottom, but you'll be suprised just how slow you can go.
Make sure that you look every time you 'change' or change your line. People don't expect sudden movements and you may 'take out' people who are overtaking you. By looking you make sure that no one is coming up on you, flicking an elbow is not enough!
Enjoy!