Coda is my favorite web development environment on the Mac, combining a syntax-aware editor, a visual CSS editor, and an FTP client that can sync local changes to the web server. Until I read this item at Dra Studio, I had no idea you could add custom books to Coda.
Adding books to Coda is very simple – simply click the ‘+‘ button at the bottom of the Books page and enter the book title, main URL, and a search URL. You can find URLs for some useful books to add at Dra Studio & SitePoint.
I find the WordPress documentation (codex.wordpress.org) especially useful when working on WordPress plugins or themes.