Below I have linked various sites and videos that I feel do a particularly impressive job of explaining concepts and answering the questions that I get asked in practice every day.
I recently found this excellent white board video by Dr. Mike Evans that was funded by the Ontario Government. It does a fantastic job of explaining a logical and evidence based process for the evaluation, management and prognosis for Low Back Pain. Anyone with low back pain should watch this video to gain a better understanding of this condition.
There has been a great deal of research surrounding chronic and persistent pain in the last 20 years. This video by Professor Lorimer Mosley provides a fantastic explanation of recent advances in pain science.
Evidence Informed Practice looks at combining the best scientific evidence with clinician experience and the preferences of the patient. This video explains the process.