Based on that description, I'd consider you to be self-taught :) I have a degree but I also consider myself self-taught. What gives? I've encountered many folks (probably not your average HN reader) who are simply unable to learn new things without explicit direction under a teacher. The way I'm defining it, a self-taught person uses multiple sources (books, learning-by-doing, bosses, feedback, etc.) to acquire knowledge.

In some ways, the purpose of a university education is to give you the ability to learn new things. The best example in our field is programming languages. While many of us can code in several languages, we probably did so without the aid of explicit instruction.

It certainly comes down to definitions though :)