'...Not sure about a good 'source', but many have been shared here, if you care to do a search.
These are ONLY the FIRST and SECOND page of FIVE pages I found here on the forum. Literally hundreds!:
Otherwise here are some found after a Google-search:
Code:
[url]http://www.bestwpthemes.com/[/url]
[url]http://www.acosmin.com/wordpress-themes/[/url]
[url]http://www.templatesfeed.com/[/url]
[url]http://www.smashingmagazine.com/2008/01/08/100-excellent-free-high-quality-wordpress-themes/[/url]
[url]http://itdiscover.com/links/best-free-website-wordpress-css-templates[/url]
[url]http://www.wpthemesbox.com/[/url]
Also posted on this forum by me is Wordpress Theme Design manual, so you can learn how to design your own themes:
This book walks through clear, step-by-step instructions to build a custom theme for
the WordPress open-source blog engine. The author provides design tips and suggestions
and covers setting up your WordPress sandbox, and reviews the best practices from
setting up your theme's template structure, through coding markup, testing, and
debugging, to taking it live. The last three chapters cover additional tips, tricks,
and various cookbook recipes for adding popular site enhancements to your WordPress
theme designs using 3rd-party plugins as well as creating API hooks to add your own
custom plugins.
Whether you're working with a pre-existing theme or creating a new one from the ground
up, WordPress Theme Design will give you the know-how to effectively understand how
themes work within the WordPress blog system enabling you to have full control over
your site's design and branding.
Who this book is written for:
This book can be used by WordPress users or visual designers who want to develop a
WordPress theme. You only need to be comfortable with the basics of web development
and this book will take care of the rest.
DOWNLOAD:
Code:
http://depositfiles.com/files/5738890
http://rapidshare.com/files/119507180/1847193099.zip
Hope that helps!
themagician