Its quite easy to use, if you're a student you're able to download the documents for free all you have to do is signup with your University log in details. There's a lot you can do with Digi-maps for example you're able to get the typography for your sites, surrounding building heights, etc.
So after getting a copy of this I shared it with the group because we've fallen behind with this project and the only way we'll be able to catch-up is actually by working as a team - which meant sharing documents with one another through the Class Drop-box which we've set up.
For those who are working on projects and would like site plans a great website to use is Digimaps: http://digimap.edina.ac.uk/digimap/home
For those interested in storage space or creating an online database, one of the best websites to use is Dropbox: https://www.dropbox.com