Plz help me with making teacher management system

[pksucks]

hi there gurus, I want to make a teacher management system in php. the basic facility should be that there will be a teacher login, which will open his respective page where he can have his documents put and the facility to delete it etc. so that students can download them.

 

Plz help me. what would be the basic thing e.g  how to make files put on server and how to download files. i am not asking about the code but only the basic logic e.g would that be file writing on the server? what is the basic logic.

 

for example you can see lectures.pucit.edu.pk