sorry for the delayed response
the hello world tutorial has the importation of a sprite font
unfortunately, there is no easy way to cut up the sprites into individual frames, unless they are evenly spaced
I was going to make an app to speed the process, but that's far, far on the back burner, as I really need to continue development on my game while I still have a job.
you basically just make each letter a frame in a sprite
if they are in order (the frames), then you can just set a range, , if they aren't in order, you can specify the order, with the Set By String action