Overleaf is an online collaborative LaTeX editor that compiles your project in real-time. It’s easy to get started with- you don’t need to be a LaTeX expert! 

Imperial College London students, staff and researchers are entitled to free Overleaf Professional accounts. Overleaf Pro+ accounts provide real-time track changes, unlimited collaborators, and full document history. To claim your Pro+ account, sign up for Overleaf using your Imperial College email address: www.overleaf.com/edu/imperial 

Overleaf also has some useful resources for getting started with LaTeX:

Creating your first LaTeX document video taken from the Overleaf website

Creating your first LaTeX document