Clifford Algebras What would be the best source to learn Clifford Algebras from? Anything online would suffice or any textual sources for that matter..  
I'm interested in doing a project in the subject, but I'm not sure where to begin to learn. What would be the prerequisites to ensure a stable foundation?  
Thanks   
I'm also aware that they can be applied to Digital Imagining Processing

When first starting out, I found some of Alan Macdonald's introductory material to "geometric algebra" very useful for developing intuition.
To make a gross overgeneralization, geometric algebras are basically the low dimensional Clifford algebras over $\Bbb R$ that are most relevant to 2-d and 3-d geometry, and even some 4-d relativistic geometry. I think it's beneficial to have that experience before seeing more general Clifford algebras over different fields, with higher dimensions, with different forms, etc.
I found that paper and several of the other papers he has online very helpful. There is a more technical description, along with some practical uses, in Jacobsons Basic Algebra II.
Slightly more physics-y versions of the same content are found here. I have not had the opportunity to read it, but Lundholm's material is also something I see frequently suggested.
