Wikihow: How to Exercise Your Eyes, How to Exercise While Sitting at Your Computer and How to Exercise While Watching TV
Duct Tape Marketing: Take an SEO refresher course — Here’s my advice: Bookmark these sites, visit them, read the books the site authors have written and recommended and then make sure you take a refresher course every 6 months or so.
SearchEngineWatch: My Decade Of Writing About Search Engines by Danny Sullivan, who created Search Engine Watch. Includes recap of his significant articles and this summary:
The biggest overall theme in doing the recap is how that big old wheel keeps spinning around and around, with people often buying hype because they don’t remember things have come before — or marketers making errors because they don’t understand issues that were explored already in the past.