Thanks to the magic of the internet, I found a site that hosts a bunch of free tutorials. To save time, I'll just copy and paste what I already sent to tutors...
I found a good site that has a load of tutorials that covers a variety of different programs like unity/source and blender. Might be worth sending out to students who will need to fill their sleepy summer.
All of these are free if you sign up for a life time subscription, which is also free. But this must be done before the 10th of July before the offer disappears, or so the grapevine says.
The list of tutorials is found here www.design3.com/learn
for the free subscription.
So there you go, get on it!