Okay, so there a bazillion WP resources out there (and feel free to add yours and I’ll update the list), but here are a few I find useful:
n your own server WP (e.g. wordpress.org)
For inspiration: http://welovewp.com/
For simple howtos and tutorials: http://www.siteground.com/​tutorials/wordpress/
For a book: http://www.amazon.com/Word​Press-24-Hour-Trainer-Crea​te-Customize/dp/0470554584

For the official forums and way to ask for help: wordpress.org