Flummel says Brain Exploreris a great way to learn all about the human brain. It was commissioned by the Lundbeck Institute in Denmark and lists as their goals: to achieve consensus in an international forum on how to improve diagnosis, treatment and compliance in CNS [Central Nervous System] diseases; to develop practical and supportive educational elements for health care providers within CNS; to build and maintain partnership and network with specialists within CNS" Considering that the brain is a pretty important part of the CNS, it makes sense that they would feature this big chunk of grey matter. "Brain Explorer" is a pretty comprehensive lesson in brain chemistry, anatomy, disorders, and definitions. Put on your thinking cap and go in for a visit!
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.