There is a lot that goes into hunting public land, this can be the most rewarding hunt of your life or a completely unsafe disaster.
If you don't know the regulations, you better research and understand them. Call the park rangers and ask where you can find information and ask for advice.
If you don't have GREAT gear, I would seriously think how much you are willing to spend on it. Travel with what you NEED.
A GOOD hand held GPS, with a long battery life, is almost a must.
Get a topographic map and compass and really research where you want to hunt. Google earth helps a lot.
Super comfortable boots - waterproof a huge plus. Hunter orange camo.
Couple flashlights - have at least one with a red/green light so if you see another hunter you can flash them without disturbing game.
If you can find a buddy to go with you that makes it all the more fun and helpful.
One of those deer lugging carts/tote bags can help you move your game a hell of a lot easier than your arm with a rifle on the shoulder.
Water and a small snack. Thermocell to keep the D### mosquitoes away.
What ever makes your life easier and the most comfortable out there, invest. I researched what it would supplies I would need if I was stuck in the wild - because you just never know. Just pick out the things you feel you may need.
Get in as early as possible. You don't have to travel ten miles to find a good spot. But it is nice post up where you want to be in the first place. Plus the earlier you get in and the longer you stay, you may be able to take advantage of other hunters moving around and pushing deer to you.
Public land hunters don't like to divulge too many of their tried and true methods. Kind of like asking a fishing guide where you should fish.
I think everyone should give public land a try for a season - really puts you verses nature.
The worst part is it's public land, so you don't OWN a spot or area. You could be sitting there, in your honey hole you've staked out, and in comes a hunter from out of no where. Just the way it is.