There are many different ways to get started, personally I started with binghamprojects.com several years ago, they offered a plan, first for your choice of bows longbow or recurve, they explained the bow press, which is the form used to make the bows shape. And then they offered a simple plan for an oven which is one way to craft a bow. It has been rewarding for me and my first bow was a shooter, having killed several hogs with it.
I have done several since then, (lots of relatives that are bow shooters)
cost comes down with volume and the bows get better with experience, which is why lots of guys hang out here, there is plenty of said experience.
Mike Most