The site looks very nice. Clean and well presented.

Search is a must for a site like this. I know you said it is coming soon, which is good. One other issue is that you are using a fixed width layout. For code examples, sometimes you will need a larger area to display the code without wrapping. If you had a fluid layout that let the main portion grow, that would solve the problem.

You may want to add a wish list area where people could request examples they would like to see. I also like Detrus idea of chaining items together to form a larger tutorial.