I've loved almost all the flavors I've tried so far. Buy some sample kits from Halo and Heather's Heavenly Vapes and Mt. Baker, and explore!
I came into this with zero interest in candy/fruit/baked flavors, and it turns out those are the ones I love.
Also, read
reviews here, and on Youtube, you'll find a cast wealth of information there. The same names tend to pop up again and again, you have a better chance by trying them first.
Your budget is also important, some of the better ones are pricey, like 5 Pawns, or my faves, Tasty Vapor, but I like them so much I don't mind paying more. It's still cheaper than cigarettes!