Guy friend coming over for the first time

[pellaz]

...
1) I don't really know what to do when/if he comes over
2) He might not come over because his homework and he has a quiz tomorrow at eight
3) I'm not sure if he even likes me because it seems like he does but idk for sure. ...

you might offer to first off help him go over his quiz study. Tell him to bring over his notes and if its the kinda the thing you can; offer to ask questions and listen to his answers.

if you offer some food tell him in advance that he dosnt eat before.
up front discuss what time he needs to leave, for his classes next am. That way no guilt if he stays the night.