This website http://www.finr.net/
has a few great resources for understanding the brain and brain injury.
I love the iPad iphone app of 3d spinning brain model.
I think it can help many people understand basics of anatomy and injury.
The resources section is on the right margin and it's quite good.
Under the section about anoxia and hypoxia there is the ring of familiarity with CCSVI symptomatology.