Finding documentation on WordPress.org
Downloading themes from the WordPress theme repository
Downloading themes from third-party websites
Installing and activating a theme
Getting the absolute directory path of the active theme
Creating a theme by using a theme framework
Adding expected WordPress hooks
Including PHP files from your theme
Listing all of the pages that exist on a blog
Listing all of the categories defined for a blog
Listing all of the tags in use on a blog
Highlighting the current page in the navigation
Adding a search function to a theme
Getting the category page link from a category name
Displaying page links only if the destination page exists
Creating a category drop-down menu
Creating drop-downs using child pages
Displaying ads after every third post
Removing posts in a particular category
Removing posts with a particular tag
Creating multiple loops in a single template
Displaying only posts in a particular category
Styling every other post differently
Styling posts in a particular category differently
Showing every post in a category on a category archive page
Automatically limiting the number of words of content
Determining if the user is on a specific page
Determining if the user is viewing a post in a particular category
Displaying the post date for each post
Highlighting search terms in post content
Adding navigation through older/newer posts
Displaying an edit link for posts
Displaying custom field content
Displaying a post author's avatar
Displaying a comment form on a post
Displaying the latest comments on your blog
Highlighting the post author's comments
Alternating the style for comments
Displaying threaded comments properly
Using the Text widget for custom sidebar content
Including a dynamic sidebar in your theme
Including multiple dynamic sidebars in your theme
Setting the default widgets for a sidebar in your theme
Positioning multiple sidebars in your theme by using CSS
Styling the appearance of sidebars in your theme by using CSS
Displaying different widgets on different
Showing asides in the sidebar by using the Miniposts plugin
Adding an interactive Facebook-style wall to a sidebar by using jQuery
Creating a simple page template
Creating an archives page template
Creating a taxonomy navigation template
Displaying author avatars and descriptions
Creating a table of contents page template
Showing your pictures from Flickr
Displaying a special template for a specific category
Aligning images properly within a post
Creating a media template for a specific media type
Displaying a related image for every post
Creating video posts by using the Viper's Video QuickTags plug-in
Getting author data via an author's ID
Dynamically displaying the author's name and linked e-mail address
Listing all of the published authors on a site
Listing the authors who most recently published a post
Listing authors by the total number of comments that their posts have received
Adding a custom user field to display an author's Twitter link
Linking to your theme's JavaScript files directly
Adding JavaScript files to your theme programmatically
Adding a bundled library to your theme programmatically
Creating a featured post slider
Making sidebar widgets toggle-able
Allowing for multiple theme color schemes
Changing the default Gravatar icon for your theme
Registering shortcodes for your theme
Displaying information based on the logged-in user's role
Packaging your theme for distribution
Uploading your theme to the WordPress.org theme repository
Adding a skip navigation link for usability
Centering your site's layout in the browser window
Setting up a randomly-rotating header image
Making theme components drag-and-drop