Sometimes it may seem unclear how you're supposed to take all the different organizations out there ready to help you - us included - and utilize them in the most effective way. You don't want to stop in at Point A and be told you need to go to B first, even though you already checked C and D and they do the exact same thing.
This article from Northern CA's Times-Standard Online paints a much clearer picture. The local Veterans Resource Center gets money. This money gets the local transitioning veterans on their feet in simple, specific ways - the center pays for their work boots & vest, or their textbooks, whatever they need to prepare for the work they're interested in. After they've been prepared, they begin looking for work with specific employers, which is where we come in.
Find the resources near you that can help you prepare similarly - it may not be free books, but it may be other benefits, or a stockpile of articles online or library resources. Attending a career event without knowing what you want to do is OK too, and recommended as far as a year out from transitioning. Just understand why you're there to assure you get the most out of it. The first trip is part of this research phase; you're there to gather information. When you come back, it will be as a prepared job seeker; you're there to get a career. With good preparation, you'll definitely be able to tell the difference.