There are some amazing learning resources on the web, in every area of development, design, mobile, responsive, UX, and more. Here are some of my favourites.
The advent calendar for web geeks. For twenty-four days each December they publish a daily dose of web design and development goodness to bring everyone a little Christmas cheer.
A List Apart
Explores the design, development, and meaning of web content, with a special focus on web standards and best practices.
The Agile Manifesto
The core ideas and principles behind agile development.
Nifty things you can do with CSS, like making interesting shapes, or speech bubbles, or pull-out quotes.
The website and blog of Eric Meyer, CSS guru and web consultant.
The website and blog of Paul Boag, user experience guru and web consultant.