Kathy writes that many users are stuck using P mode, or the automatic mode of their favourite tools simply because they don’t know how, or don’t know why they’d like to use those extra features.
I link to this usability article here because she used camera terminology to describe how a user approaches a complex application. Even if you’re not interested in the usability of stuff, and web apps in particular, then reading this article may inspire you to learn about why you haven’t used the A, S, or M modes on your fancy, expensive camera.
If you’re still interested, then read Understanding Exposure: How to Shoot Great Photographs with a Film or Digital Camera by Bryan Peterson. It’s my favourite book on photography and it will change the way you use your camera!