Books/Tutorials to customize VM2

[borch]

Hello everybody,
I would like to deepen my knowledge of VM2 in order to have the ability to make customizations  (by modifying the code). My skill of PHP, HTML and CSS is decent: I'm not an absolute beginner, but at the same time I have not the skill to modify the code without any help. Do you know step-by-step books and/or tutorial series which can help me? I read English, Italian, German, French and Spanish.
Thank you in advance.

[jenkinhill]

We do not recommend or support modifications (hacking) of the core code. Customisation is by the use of plugins or by the use of template/css overides.

Some information on plugin development is on http://docs.virtuemart.net/tutorials/34-development/84-extension-plugins.html

Also see http://docs.virtuemart.net/tutorials/33-templating-layouts/78-introduction-template-system.html