drupal's usage goes in millions now, but the bottleneck of this usage, despite of all the books and publications is mainly one thing: html accessibility
the transition to CMS makes tracking html markup by newcomers a real hurdle
since your ambition, like most drupal sides is to make a difference - a detailed tutorial easly detected by searches could be the right zone for the universal quest
ps: accompanied by a larger 'donation button - sincerely Ed