Hi, i bought the 3D Apple Games by Tutorials book, and it says in there that you will need to test a few parts of the game on an actual device. I plan on using an iPad, but i don’t know how to test my games on a device. How do i do that without paying for a developer grant, i think it is [$100]. Is there something free i can use, if so, how do i set it up?
Thanks. 
With xcode 8 you dont need a $100 license anymore. There should be plenty of tutorials on how to set things up.
These might help:
Xcode 8 free device testing | Apple Developer Forums