Free WordPress Theme Resources:
WordPress Theme Viewer – The ‘official’ WordPress theme viewer. Thousands of free themes and thumbnails to see theme layout. Select ‘test run’ to see the theme in full form. Can narrow your search using the options in the sidebar.
Free WordPress Themes – A hand-picked selection of WordPress themes, with thumbnails. All themes are aesthetically pleasing, with solid usability and validated code.
Free WP Themes – A small, yet very nice selection of WordPress themes with thumbnails. Preview mode lets you view theme as it would look on WordPress blog.
Top WordPress Themes – Showcasing a few hundred free WordPress themes. Some themes can be found in a number of other places. Yet the site is easy to navigate, features thumbnails and has a preview mode.
Theme Time – A very nice, solid selection of attractive WordPress themes. Thumbnails and previews available as well as some premium themes.
WP Skins – Thousands of WordPress themes with thumbnails and download statistics. Nice site, with tons of themes, though it has popup advertising.
Weblog Tools Collection – Great for both WordPress themes and plugins. Not the easiest site to use. Theme catalog is huge but thumbnails were only added recently. You can use the site’s RSS feed to keep updated on new themes and plugins.
Other WordPress Information & Resources:
WordPress Forums – ask questions, get answers
Learn WordPress – WordPress’s own detailed explanatory resource
Learning about the WP Dashboard
WP Beginner – Beginner’s Guide for WordPress
Designing Headers (wordpress.org)
The Anatomy of a WordPress Theme – yoast.com – An info graphic and explanation an cheatsheet about how a WordPress theme works.
WP Candy – News,Tutorials, Interviews, Reviews
Installing WordPress (if you want to create a site and host it yourself)
WordPress.org VS WordPress.com (free version) Inforgraphic:
Infographic by WPBeginner