@wylmite1986 Your sims screenshots should be located in something like this path (depends on what OS you use): Documents/Electronic Arts/The Sims 4/Screenshots.
To upload to the forums you'll need to have an image hosting program like Imgur to help: This may help explain it: https://forums.thesims.com/en_US/discussion/830602/tutorial-how-to-upload-pictures-to-this-forum/p1
You can buy a new homework book at the kiosk in the plaza not sure about the presentation board. The grade will def be lower and possibly a fail as the presentation is like the final exam for the class.
