Anything you normally would. Just remember horses that have been out and showed are worked on the same day as travel a lot of the time. I would allow one day for settling in and start by lunging then riding within that first week. If you horse has travelled a lot you can offer an electrolyte paste or drink.
Hi, on the first day I show where the food and water is and let him/her look around and get comfortable. After that day in my opinion its work time. The worst thing that you could do is let them sit and get the idea that they don't have to work with you. This is just my personal opinion, my first horse I let her just sit and she was not the best. All of the other ones I have worked and turned out to be great! Hope this helps.