How to be less ignorant?

Frylock had some good advice in another thread you started:

I would generalize this to say that the way to be less ignorant is not just to memorize a whole bunch of isolated facts and aphorisms and bits of knowledge, but to learn about things in context and see how things fit together.

The more you learn about a subject, the easier it becomes to learn yet more, because you have something to link your newly-gained knowledge onto, a framework to fit it into.