Ask HN: Resources for teaching toddler advanced vocab and reading?

We have 2 year old who is super talkative. He can count numbers, talk fairly complex sentences for a two year old. Other day he surprised us by saying binary numbers. I had said to him jokingly when he was 6 month old.

What are ways we can increase his vocabulary and teach him reading books?

I would love to know if you have found any hacks.