SEO Communities
Here are a number of community resources that will allow you to learn the latest and greatest tricks of the SEO world by some of the major pro's. Just be careful because not everyone really knows what they're doing so you'll want to inspect profiles to determine their credibility.
I recommend downloading the app: TapaTalk for iPhone and iPad if you really want to take advantage of forum communities. This app does a great job organizing and gives you an easy navigational experience on forums.