My best advice is to just jump in to your first craft show or two. I was able to make friends with other craft show vendors that way and they passed on so much information to me on which shows they recommend, etc. I booked 2 shows this fall they recommended for about $40 each and am looking forward to trying them out. Another thing I am going to try and do is to attend shows on the weekends I'm not doing craft shows to check out which ones I would be interested in participating in next year. Search the teams for a local group (mine is the Southern Maryland etsy group) which may get you started. As other said, some are good for 1 company while being terrible for another. I personally need shows where people are willing to pay $50 for a wreath. I also think that I personally am going to do better a crafter only events where there aren't vendors (like Pampered Chef, etc).