Anyone know where to start after anime?

I'd honestly start from the beginning. There are some slight differences, especially closer to the end of the anime. You'd miss some character introductions (like with Hiou, who is not in the anime) if you skip the manga to where the anime ends

About chapter 72 -- but like the person above said, it'd be better to read the manga.
I actually prefer it over the anime and it's more detailed.