Unfortunately college are unwilling to install Unity onto college machines, their main issue is disk space on each machine. However Unity is free for students and can be installed on your home PC or laptop, a previous student ran unity on an AMD APU laptop so a high powered machine is not required. Another important issue is to remember your project marks are for technical skills and not necessarily graphical skills or for a 3d model of a character.
Download / Install
Board to bits, youtube - Tends to be fairly simple in how it is explained
Sebastion Lague, youtube - Describes theory behind the topic before coding it.
Catlike Coding, website - Requires reading, useful for learning and making unity programs - does a lot for graphics.