I was really glad to be working to create Easy Green Print with a friendly local company who are the leading light in environmental printing. It ticked a lot of boxes for me:

In looking for an answer to this question, most posts say something like: Drupal is almost entirely modular, and driven by lots of "hooks" and what code is actually executed when is deep Drupal Voodo. Or they say RTFM. I think the F stands for Fantastic, but it could also be Fragmented. This is my attempt to understand what hooks get called when in the delivery of a simple page (like this one).

When you create a custom fieldset in CiviCRM, a new table is created, but the table name and field names are not altogether obvious. Here's a function that finds them out. All you need to know is the name you gave the fieldset (and the names you gave the fields).

So you might have created a field set to keep a record of contacts' favourite music called "songs". You may have given fields "Artist", "Title"...