At the moment I read a lot about SharePoint configuration since I’m doing initial SharePoint configuration tasks. Here are two useful blog posts I have found.
Top 10 SharePoint Configuration Mistakes
Besides the well-known ‘don’t use the SharePoint configuration wizard’ it names 9 more configuration mistakes such as Default SharePoint Database Settings which slows down SQL performance (and therefore SharePoint as well).
SharePoint Configuration Management
It shows how to track changes of SharePoint configuration and which benefits such a approach has.
Here’s the complete post: SharePoint Configuration Management: Guidelines and Tips
25 Mistakes to Avoid in SharePoint or Office 365 (and How to Fix Them): http://en.share-gate.com/blog/recording-dont-suck-at-sharepoint-avoid-common-mistakes