if you can afford it .. *dons flame suit* .. get a provari ..if not ..get another mod that you can replace the batteries in .. sealed units like the ego style will eventually die .. it might be a more expensive initial investment but it should be cheaper in the end ..and of course higher quality
other than that.. pick a vaporizing device you like (atomizer, cartomizer, clearomizer, cartomizer tank..etc) ..don't buy in bulk until you find what best suits you
for juice.. buy sample packs to find flavors you like ..then buy in bulk (usually get a discount for buying in bulk) ..
First, Congrats!!! 2nd, I totally agree with a mod if you're going to stick with vaping long term, and for that reason above. All Li ion batteries have a life of about 300-400 charging cycles then they're dead. If you let it run 1/2 way down and recharge then do that again, that is ONE charging cycle. (It knows). Replacing an $8-10 rechargeable battery is much better than replacing the entire unit. For pocket size I absolutely love my vv gripper. SMOKtech Gripper VV 3.0-6.0 18650 Variable 510 OLED [gv-SMOKtechGripperVV] - $42.95 : GotVapes.com, E-cigarette Supplies - Atomizers Cartomizers Mods Juice and more A bit smaller than an altoids tin, fits great in a shirt pocket for a guy. It's plastic, but mine has held up great and I no longer use any of my other batts or mods.
I also totally agree with the suggestion to go to vapefest if you can. You can try many things, get juice samples etc. What each person likes is different. Being able to see and often use everything in one place will give you more info than anything else.
For a juice holder my personal fav is the vivi nova, and my juice supplier is gotvapes flux juice. It's the only one that I can vape at 24mg nic without a horrible peppery taste, and the 24 mg is the only level that kills my cig cravings. Good luck!!