Wordpress
This is written for a newbie but it provides some helpful links. To find them it would probably be better to bookmark the individual links, but for now, I'll just save the thread.
Conditional Tags « WordPress Codex
For when you need to display or modify something based on a condition. Is this post being displayed on it's own page? On the homepage? Etc.
http://bluemandala.com/thematic/thematic-structure.html
I don't plan to use Thematic. The default 2011 theme is responsive and looks to suit my needs much better. But this is useful for digging into how Thematic is structured.
Plugin API/Action Reference « WordPress Codex
Plugin API/Filter Reference « WordPress Codex
Bookmarking various parts of the WordPress Codex just to have them handy.
WordPress hooks database by Adam Brown
If you need to lookup a WordPress hook--specifically if you need to look up a hook in a certain version of WordPress--this is the site for you.
WordPress › Infinite Scroll « WordPress Plugins
This Wordpress plugin automatically loads another batch of articles when you reach the end of the page. In general I'm not a fan of the infinite scroll, but it is appropriate in some circumstances.
Tutorial: Using jQuery Masonry with WordPress | WPLover
JQuery plugin for WordPress. It reflows content into columns based on the width of the browser. Makes responsive, balanced columns.
Instant WordPress
I haven't tested it out yet, but it looks very promising! Carry a working installation of WordPress around on a USB to test on various machines. Or maybe to demo. There are probably a ton of great uses.
Conditional checks for custom post types
Nice simple tip for using conditional checks for custom post types. This should be covered on WordPress.org.
