Reading to baby

I'm trilingual so I speak English, Spanish, and Hawaiian. I have books in English and Spanish. I want my baby to be diversed in language because she will be a mixed baby. And I want her to experience all her cultures. my biggest concern though is how do I even introduce that? Do I start by reading and talking to her in these languages and progressively let her catch on as she grows older. Also off topic of the post. Can anyone tell me when they knew labor was coming? 38 weeks on Thursday and I'm absolutely over being pregnant.