autodidactically? I'm unfamiliar with the word.

I'm in a Japanese class so if you're suggesting I'm trying to learn this on my own you're mistaken. Not sure though, my teacher is a native speaker, she also never has time when I can go by because of my work schedule.

The first and third sentences were taken directly out of the book so I can't imagine them being incorrect. (I exchanged sore and kore for Tsukasa and Kagami for lols)

Also what typos?