What, if anything, do you do to break in a new turbo?
A fresh oil change at the same time you install it, then just drive it. No real "break in" period required.
I would recommend an oil change after 1000 miles, just to be on the safe side. No harm in doing it anyways, and oil contamination can be devastating to turbos. I'd also keep my foot out of it until that change was completed. Just my 2 cents...