Here are some helpful tips, tools and code for jquery, css3 and html5:
- Gravit – a new design tool
- Supersized background slideshow jquery plugin
- animated background headers
- Tooltip Styles Inspiration
- Alerts… but awesome. 🙂
- Freebie photography, tools, and other stuff
- CSS3 pre fix tool
- CSS3 Icons
- interactive infographics
- Make the most of your design with hero headers
- cheat sheets for design
- 10 basic tips about responsive design [really good]
- Toolbar.js
- html5 use responsibly
- 44 Free Responsive website templates