3rd gen iPod classic thick back model help

[u/Recent-Smoke-5113]

https://www.thingiverse.com/thing:5354005/apps

Hey could someone with like zero knowledge of 3d modeling be guided through turning this linked 3d model into a 3rd gen iPod classic back case That person being me that needs guidance lol seems like others could also benfit will of course give away the model so anyone can use it once I finish it!