- A List Apart
- Digging Into WordPress
- Wireframes Magazine
Published by Happy Cog A List Apart covers all topics dealing with web design. From usability to introductions to Ruby on Rails. While only published a few times a month each article is packed full of knowledge and is good for reading more than once.
Although this blog is a newcomer to the scene the authors are not. Follow this blog for lots of neat little tricks to use in your wordpress development.
Another blog by Chris Coyier (Digging Into Worpress is also by Chris) but a bit more generally focussed on CSS. A great all around resource for design and coding tips. Also check out the forum for lots of helpful people.
If you are looking to learn more about wireframes and information architecture look no further. One of the things I love about this blog is that it shows examples of how other people do their wireframes.