Getting Started with Custom Node Access in Drupal 7
March 19, 2013
So you've come across a scenerio where you need to give users special access to nodes, but the collection of content access control modules available on drupal.org don't quite meet your need. Then you my friend need to build your own solution.
I found myself in the same boat, so I thought I'd share some of the articles that really helped me grasp custom node access.