I second the motion on the GoGo batteries and the Go carts
Go-go Products
I also recommend the Volt X2
Smokeless Image | The Best Electronic Cigarette Excellent equpment and lots of colors too!
The regular cig sized Volts are also very good...they are on the site too under the "Batteries" tab. You can get just anything you want to Smokeless Image...great company and about the best CS there is in the industry.
Another winner is the eGo....you can get a great kit here
Complete Electronic Cigarette Kits And imho the best cartomizers for the eGo are the 1.7 ohm eGo Mega cartomizers. Sold on that site, but currently out of stock. They are also available at Madvapes
Black 1.7 Ohm eGo Mega Short Cartomizer, Single Coil
Those are good choices for starting out. Worry about variable voltage like the eGo Twist or kGo VV later down the pike...once you get the hang of things and what ohm you like and all that. If you do decide to try the kGo Hoosier's has a good kit too, however...and a nice selection of cartomizers, too.
KGO kit1100mAh by SLB (they also have the kGo variable volt model there too)
I also love this device...but it doesn't "look" like a cigarette...it's a mod (non variable volt). It's WONDERFUL...and versatile too, if you get the extension thingy to go with.
Gripper This is the extension thing:
Gripper 510 Extension They have a kit there for the Gripper...but it's kinda expensive. They also have the batteries there for it for a good price.
Anyway..the rest of my stuff I use the most is under the banner in my sig.....
Good luck and have fun!