Thumbs up for Ben. I agree wholeheartedly.
These forums are a fantastic place to learn SEO, I think I've learnt the most from interacting on here. Keep asking questions, respond to others and learn, learn, learn.
As for books, I would start with these if you haven't already:
- http://www.amazon.com/Search-Engine-Optimization-SEO-Secrets/dp/0470554185/ref=sr_1_7?ie=UTF8&qid=1339725028&sr=8-7
- http://www.amazon.com/The-Art-SEO-Eric-Enge/dp/1449304214/ref=sr_1_11?ie=UTF8&qid=1339725028&sr=8-11
Subscribe to all the best blogs/sites out there and read constantly. Some of my favourites include:
- http://www.seomoz.org/blog
- http://www.distilled.net/blog/
- http://www.rosshudgens.com/
- http://searchengineland.com/
- http://mashable.com/follow/topics/SEO/
- http://www.seerinteractive.com/blog
Also, if you don't already, get active on G+. Like Ben said, the best SEOs respond to queries, and I find that G+ is the best place to interact with the higher level SEOs.
Thanks,
Brad