HockeyRob,
Here's some pointers:
1. Top up your carts with e-liquid until they stop working so well or the flavor "turns". The stuffing will loose it's fluffiness and wicking capability over time. Some people rinse out their cart packing, let dry and re-use.
2. Many peeps re-stuff their cart housings with fresh stuffing (poly-fill, fluval, tea bags, coffee filter, etc.). Everyone has an opinion on the best cart stuffing. There are lots of threads here on ECF to help you with that.
3. Some folks buy so many empty carts with a huge order from one of the Chinese suppliers (cost-effective) that they just chuck them after they've been well-used and don't bother with re-stuffing.
[I am somewhere between #2 and #3...I have tons of carts, and I've been discarding the used stuffing after many top-ups and rinsing out and saving the housings. Someday I'll do a massive batch re-stuffing, probably with fluval]
4. Be cautious with the higher-nic liquids. Just pick whatever strength works for you without craving cigarettes. My first week of vaping saw me with some headaches. 18 mg or 24 mg works for me, especially when I pimp it up with some extra Lorann flavoring (for some of my blander-bleah liquids). Like many, I plan/hope to decrease my nic concentration over time.
5. Some folks love their 510 passthroughs, some are less than over-joyed at the way they perform. I belong in the second camp: my 510 performs far better on a fresh manual battery than on a passthrough. There are also many threads on ECF about the 510 passthroughs.
The PureSmoker passthough (has adapters to fit any model e-cig) is supposed to be the end-all-and-be-all of passthroughs...I have one on order, but they currently have a big back-log of orders, so it'll be a while before I'll be able to report back on that.
My Janty Stick has a direct USB to mini-USB cable, and that works very well for vaping-while-charging.
Keep on hanging out here on ECF for tips, tricks, and support.
Parked is a great vendor and resource, Texan or no.

Vaping can seem like a high-maintenance hobby, but I've been having a blast with it (I am a tweaker and concocter by nature to begin with).
And I'm off of those stinking, frikkin analogs...Hurrah!
