"For language learning, I'm skeptical of any method that doesn't resemble real-world use."
How many languages that are not English have you learned?
So I should find very basic books? Because for me newspapers or even my mobile phone's interface are unintelligible.
Start with basic books but try to move up quickly to more challenging material. I read through Lord of the Rings in second grade. It was slow and frustrating at times, but the fact that the book is so engaging helped a lot. I learned so much vocabulary in such a short time this way.
Don't be afraid to keep a hard-copy dictionary of the language you're studying handy.
For language learning, I'm skeptical of any method that doesn't resemble real-world use.