I have a maths exam next week and I was having trouble with double integrals. A friend told me there were a couple of pretty good video tutorials on YouTube explaining how it works. It appears the guy who made those has a huge list of tutorials explaining all kinds of things related to mathematics, you can check it out by clicking here.
I’m also working on a new project along with a friend, it’s called VGsave. We’re going to try and make an archive of video game saves. Still working on eveything though, it’s not functional yet, but feel free to take a look at http://www.vgsave.com