I don't actually play with Yamatos. But these would help:
https://steemit.com/nextcolony/@nextcolony/12-facts-about-the-yamato-module
https://steemit.com/nextcolony/@nextcolony/the-day-has-finally-come-the-first-yamato-season-has-started
Use the https://nc-client.jarunik.com/simulator to keep yourself safe.