Um, start out with a purchase of high VG, 0 nicotine e-juice. I know there are mods specifically for trick vaping, but this is kind of a harm reduction site, not a trick site. You'd want (I guess) to start out with a sub0hm setup, that will mean an (at least) 2 battery mod, a low resistance coil on a sub0hm tank, and batteries, which it would be very important to read up (you can find much information on Mooch's blog here) on, and follow, and well, something cheap isn't usually the deal when you want a trick mod you're usually dealing with something Very High Powered, and that usually comes with a price tag.
Honestly, I COULD give you more information, but I'm afraid I always kind of
hold back when someone comes here and says, "OH, I want to trick, I've never VAPED, but give me all the information I need, and I don't want to do too much work, I'd like you to do all the work, so I don't have to learn."
Guess what? Even if you vape 0 nic, you are still going to be dealing with VERY POWERFUL batteries that have the potential to vent, causing catastrophic failure, AND learning tricks is going to be work, and you'll have a much better grasp on vaping generally if you do a little work yourself. I'd start in the New Member's forum, and read some pinned threads, and in Mooch's blog. All the information is available, I'm just not going to recommend a setup or even moving forward with tricking if that is your approach. Mods aren't toys, so do a little work if this is what you really want to do, you'll learn more, you'll have more respect for your equipment, and etc.
Good luck. Sorry. That's just my opinion, and I think you would do well to learn. Since the search function is kind of being worked on, I will do THIS:
New Members Information
and
Index | E-Cigarette Forum
Good luck
Anna