In Over My Head

So it turns out my assistant, Angelena, is great. I, however, am feeling even more overwhelmed than ever. My room is as set up as it is going to get, which means bare walls because I don't have any wall decorations. Now I have to figure out what I am going to do with 17 first graders during the first week of school. I guess on the first day we are basically going to spend the whole day going over rules and procedures, but i don't even have any rules or procedures yet. Oh man I feel so unprepared. What have I gotten myself into?