Just thought I would share this series of videos I found on youtube. I found the guy explains things very well and its quite well put together. Some of you might have seen it before but I thought it might help others, it certainly helped me with a few things.
http://www.youtube.com/watch?v=HUx-lC8Eiqc&list=PL0oOXpubI7Q0yjS--w1FRJeSN6B2NB8Kw