Dave Peiris, Head of SEO at Propellernet, has developed a technical SEO game that is both addictive and fun!
Kevin Gibbons of Re:signal shares a crowdsourced list of SEO tips for short-term impact. Some of these are cracking!
Very impressed with this guide on topic clusters from Ryan Stewart. Not only does Ryan breakdown how the model works with digestible content and diagrams but he also references real ecommerce examples where he's applied it.