The search bar on the front page will search both Product Docs and the Support Knowledgebase. If you need to drill down for a deeper search, you can access the Knowledgebase via the link at the top of the Support Space, or you can go to our Product Documentation site, docs.marketo.com. The Knowledgebase focuses on troubleshooting specific issues, while the Product Docs site contains more feature overviews and how-to's.
The Support Blog contains posts on product changes, new product features, in-depth discussions on topics such as security and deliverability, and changes and enhancements to the Support portal.