Land navigation

So I’m AD in the navy currently, plan is to have a package in for a TDY to SFAS class next year. I am overseas on a FMF/greenside billet so I have very basic training on land navigation from a year ago that I don’t really remember much of. Will I receive an adequate class or instruction for land nav at SFAS? Or is this something I need to train on my own before showing up? I’ve read through other posts here that you receive training but I wasn’t sure if that applied to people that are attending from other branches since we’re just TDY for the selection.