First of all, let me take a sec to say good luck on your 1st year! What an exciting time.
One thing that I do in my class (which is 7th grade lang./lit.), is to give them very few rules (the "respect" rules posted above are super!). Then I give them a handout on my procedures
It's important to teach them the difference between rules and procedures. Rules are about behaviors that everyone needs to abide by in order to maintain a positive environment that also fits into overall school and district expectations. Rules are usually pretty consistent across all classrooms.
Procedures, on the other hand, are the things students need to do in order to be successful in your
classroom. These include things like how to hand in papers, how to ask a question, where to store supplies, what to do when coming back from an absence, etc. I type these up ahead of time and give each kid a copy. Then, whenever someone needs tissue or to sharpen a pencil, they can refer to the handout instead of seeking me out. It's more work ahead of time, but ESPECIALLY for a new teacher, it is so very important that you know exactly what you want kids to do in all those situations before they are actually happening. It's also a relief for kids because having a handout shows that you are organized and it keeps them from accidently doing the "wrong" thing and getting in hot water. They really do love the concrete way procedures are spelled out in the handout.
Hope this helps!