I speak three languages including English but can only read and write two fluently. I learnt them all through osmosis, except English, which was taught at school. Since we do not live in our native country, I have taken it upon myself to teach DD3.8 one of my native languages through immersion. I only talk to her in that language. She gets plenty of opportunity to talk in English and is very fluent with it. She has also recently started blending sounds to read phonetically spelt english words. She continues to talk to me in English but that's how I was growing up. My mom would talk to me in her native language but I would talk back in this other lanuage that I spoke with my friends. I ended up learning both languages. I am not planning to teach DD reading or writing in my native languages for a while. I remember the summer when I was 10 or 11, when I just picked up magazines at my grandparents' house and learnt to read without any effort. I am hoping it would be the same with DD. Even if she does not learn how to read/write, just knowing how to converse is fine by me.