Here is a Google Classroom Tutorial that I deigned for my students.  I also added Creative Commons licensing to my post (Attribution-NonCommercial-ShareAlike 4.0 International​) since I know that the information in my slides is specific to my school.  Feel free to make changes and remix this to suit the needs for your district.  For older students, I used this as a review to help them get familiar classroom again as well as provide feedback on how this slideshow might be improved.  They were asked to think like a student that has never used Google Classroom before and see what changes could be made to the slideshow in order to make it better / easier to understand.  
If you do remix this project, please let me know by emailing me at mrdavolatech@gmail.com or tagging me on Facebook, Twitter or Instagram @MrDavolaTech.  

​Enjoy!