I agree that it would probably be helpful for a beginner.... At the same time there are a cazillion free tutorials that are just a helpful and filled with good info. I mean, its your money, I just don't see the point in paying for something you can get for free. hell, there are even a bunch of FREE fiberglass tutorial videos on youtube, google etc...
search "fiberglass tutorial" or "how to fiberglass" or fiberglass(ing) basics" and you will find anything/everything you need.
one thing i will add: When you get to the Kitty Hair (long strand fiberglass filler) step, be sure to mix it VERY, VERY well! if you think you got it, mix it a little more! I let me buddy help me on a fiberglass enclosure and as i was sanding I would hit filler that was soft and green. Meaning it had no hardener in it. I ended up just sanding it with 40grit and adding another layer but that took me a good hour or so