usually on same thread area you put it. I'll look, just got on:)

I found it by going by the dates. you also need to have a post title, which might make it easier, like you did here.
I will answer you with this as I answered the other post. In your research tree are tiles for your units and buildings and in upper right of tile is tiny blue button to tap, which gives a lengthy description. Remember you still have to research the Roman numerals for the era too, and they don't have the tiny:) As for capitals you can move to any core you own, even under 5 level, outside of your original provinces it's a 5 or more. Capitals and universities are the only buildings that produce civilian units.