For me I think when I was starting out I found Mike Johnsons Autoblog Blueprint taught me a ton of info about wordpress/seo/how to monetize sites/automation and solid foundation with no hype(no garbage autoblogs) and I saw results from it and I always appreciate his updates.
For something I havent had chance to really implement but that I thought was really unique(and huge value added for me) was Russ Ruffino recent WSO on here Video Sales Firestorm. I think he said it best with something like "So many people get caught up in the minutiae about technical stuff/implementing systems,etc.. and lose focus on marketing/connecting with what the customer is looking for ". It really goes back to connecting with customers/people and the way he lays out it out was great for me.
There are other little things and products I have found helpful and learned from but those products above are what come to mind when I think of great value to me.