Definitely try sample sizes in various nic levels, flavors, and pg/vg ratios til you find what you like for nic and pg/vg. Sample sizes are more expensive per ml, but not nearly as expensive as getting a lot of bigger bottles that you end up not liking. I would also suggest trying a big variety, even of things you think you might not like. I never could stand menthol cigs, so thought I wouldn't like minty juices. Found out I do like some! Also it's great to have a very icy minty juice for when your tastebuds just freak out on you, and they probably will. Everything will taste bad suddenly. Vaping something very icy or minty usually helps with that.