Hey guys, I'm a knife newbie, and I got a couple questions. I'm looking for a knife for daily use, to carry on my person when I'm out, but I don't even know where to start, or if there's any laws that stop me from doing so in California. Namely Berkeley and San Francisco area. I'm looking for something not too long, not too short, and above all, safe to carry. Certainly wouldn't want it to unfold in my pocket, or anything like that. Any tips for a guy like me? Thanks much!