Here is a great resource to use to help you set up for your first day of school! I wish someone was kind enough to show me this when I first started teaching. This will help you tremendously to set up your policies and procedures. Take what you want from it and add whatever you feel you need!
This document will go through snip-its of all the procedures students need to know on the first day of school and throughout the entire year: homework policy, take home folder instructions, planners, behavior policy, entrance of classroom, dismissal, snacks, pencil sharpening, lining up, and restroom policy.
This will help you whether you're a first year teacher or looking to change up your policies and procedures. You can also send this home on the first day of school for parents, or it can even help administration set up school-wide policies and procedures.