Marcin Borkowski (mbork), who’s been posting several great articles lately, has a nice offering with A few org-agenda hacks. It’s a short list of some of the ways he’s tweaked Org’s agenda view to better suit his needs.
As Borkowski says, all of this is in the documentation but may be a bit hard to dig out. If you use even one of his tips it will have been worth reading this short but pithy post.