Some people promote a fixed set of predefined mediaqueries based on <em>common</em> screen sizes. You should never listen to them and this article explains why: there are no common screen sizes. Just use break points when the content (or layout) <em>breaks</em> and you should do just fine.

Which responsive images solution should you use?

Good one

The NEW Responsive 960 Grid CSS Framework That You’re Already Familiar With.

More and more designers start looking at websites from a mobile first perspective and there are many good reasons to do so. <b>Joshua Johnson</b> explores these reasons and he looks at the cons to this approach (which are mostly personal issues, like the fact that <em>he isn't used to working this way</em>). A good article which clearly shows that we have to rethink our workflows.

<b>Luke Wroblewski</b> went loking for responsive patterns on the sites presented on <a href="http://mediaqueri.es/">mediaqueri.es</a>. He found some rather common patterns and he proposes an interesting new one.

5 Useful #CSS Tricks for #Responsive Design

#Responsive Tables