Hey, Tom, welcome to the forum and to cheesemaking.
I tend to wing it myself and have learned some good things through doing so. What I can play with and what I can't. If people didn't experiment, there would probably only be about three types of cheese out there - hard, soft, and very, very sticky cheese from aging the first two types for years on end (i.e., lost in the back of the fridge cheese).
I do recommend that you follow directions closely for the first few batches, at least, so that you get the hang of proper technique.