One of the biggest stumbling blocks for people learning to create games is the required mathematics. A common question people ask is where is the best place to learn, the KhanAcademy is certainly a very good place to start.
They literally have thousands of video tutorials, over a wide variety of subjects including thousands of math specific tutorials. Covering the gamut from early grade school up to university level topics. Best of all it is completely free. In their own words:
The Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.
Here is an example video on vector dot product.
So, if you are looking for a great place to pick up some math ( or chemistry, SAT, art history… ) skills, the KhanAcademy is a very good place to start.
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