Learn how to link multiple Revit files together using a shared coordinate system in Revit.
Read the full guide:
https://bimpure.com/blog/12-steps-to-create-a-shared-site-in-revit
Learn the basic features of Revit's coordinate system:
https://bimpure.com/blog/13-tips-to-understand-revit-base-points-and-coordinate-system
BIM Pure Basics Package: https://bimpure.com/basics