How to connect Godaddy domain to Hostgator Hosting

Thank you brother , that has was so helpful

Okay but what do we do now in HostGator once the name serves have been added??

Do you know why im getting an UNHANDLED_ERROR message when trying to do the ADD DNS Hosting step?

My Go dady domain cannot be transferred to HostGator I am getting a message in Go dady DNS " This domain is already hosted.".
Can you please help.

Thank you for your clear explanation, that was really helpful.