Note that the guide is still work in progress! I will remove this line as soon as I dare to consider this guide to be helpful. No warranty that anybody will appreciate it ;)
After some years of humble Drupal usage, I want to start sharing my experiences. Especially when you are new to it, you have no real idea on how to get started with an easy Drupal installation. It starts with the choice of the editor, covers image handling and ends somewhere in the guts of the Drupal module and theme system.