Learning about Doctrine The best way to learn about Doctrine is to read about it in the manual. Here are some important links. Doctrine 0.10 Manual Doctrine 0.10 API Docs Download Doctrine First we must get the source of Doctrine from svn and place it in the system/database folder. $ cd system/database $ svn co http://svn.phpdoctrine.org/branches/0.10/lib doctrine $ cd .. // If you use svn in you