Well to start maybe look in the FAR/AIM for night specific type things. Required equipment for night, currency regs etc. The AIM talks about nighttime illusions I think.
With your CFI you should cover those items above. Then go out for a preflight at night (good flashlight is your friend). One of the best things you can do is really situate yourself well in the cockpit. Set up your stuff just like you normally like it during the day, but take the time to do it well. At night just finding things can be difficult so organize yourself well.
As far as flying the plane goes, I'm sure you'll do some landings with and without a landing light. I would try to get an unusual attitude recovery or something similar in, depending on the outside conditions you may find yourself needing to rely on the flight instruments more than daytime to recover.
Well, these are some things off the top of my head. Night flying is really enjoyable, especially in the summer with the cool, less bumpy air. It's also pretty easy to spot traffic. On the down side finding an off field landing spot can be more tricky/
Enjoy.
