Just found a really nice presentation about an overview of web application development. This one is a Stanford University video.

Here is the description from Youtube:

Connie Chan provides an introduction to the course. Ben Galbraith then gives an overview of web application development.
Palm executives including VP, Directors, and Senior Product Managers lead a course on mobile application development on the WebOS. Students have the unique opportunity to attain the technical knowledge needed to create their own apps, get insider information about the application submission process at companies like Apple and Palm, and network with various members of Palm’s executive team.

It’s really a nice overview, really informative, take some time (around an hour), lay back and watch it.