I just got this new Dell laptop for my classes starting next week and I am honestly so frustrated already. It only has like two tiny holes on the side and I cant even plug in my old mouse or my thumb drive with my photos. I spent all my savings on the computer itself so I only have about 80 dollars left to get whatever else I need. I feel so stupid because I thought it would just work out of the box but now I feel like I am missing everything. I dont even know what these ports are called or if I need a special bag or something to keep it from breaking.

Sorry if this is a total beginner question but what are the actual must-have accessories I need to buy right now so I can actually use this thing?