There should be a few pages of things like "What do fish do" like where they fit into the water system, what they see and why they actually do it. In fresh water systems, fish are pretty critical about their feeding habits, where they sit to wait for tucker to come swimming by, and in those shallow creeks, lakes and streams, they have to see the edible stuff.
After all, its the fish you are aiming at, not a water hole for casting practise, and those insects, like your flies, are actually food.
I wouldn't fish freshwater in a fit, it isn't my kind of thing, but the end result is a fish and whether they are fresh water types or salties, they ALL have fixed habits.
Like before you fish a system, have a walk along the edges and look at the places where fish might hang out, and the easiest spots to fish, and where certain styles of casts fit.
With salt water estuaries and flats its best to walk around the things at low tide and look at places where the fish might sit waiting for tucker to appear.