Welcome to the forums.
Picking the automatic or manual is strictly your choice; you will find users prefering one over the other. If you enjoyed a cig dangling from your lips while using your hands for something else, an auto might be for you. Many people feel they get more control over the vape experience by using the manual batteries. The auto batteries, despite the claim that they are "sealed", really aren't; auto battereies are typically more prone to be damaged by juice that may leak from a cartomizer or clearomizer than a manual battery.
The starter kits should allow you to choose the color battery that you want from a drop down menu while ordering. Also you can chose the length of the battery (65 or 78mm). As with many things in life, bigger is better, esp with batteries.
Even though the starter kits offer a couple of batteries, I'd strongly recommend getting a couple more. The cig-alike batteries only last 2-4 hrs per charge, and if you are not particularly meticulous in charging a battery as soon as it dies, you may find yourself without a charged battery to vape on. No battery = no vaping.
Better yet, also try one of the fatter batteries, an X2. Depending upon the size you order, you can get 6 -13 hours between charges on these. In addition, the pass thru charger cable allows you to vape while the battery charges. Get the 1.5v USB/AC wall plug for faster charging.
You'll need something to put on your batteries to vape. Cartomizers, clearomizers, or ce3 nano are all good, each with a slightly different vaping experience. Choice is yours to make.
Get a couple of sampler juice packs to see what flavors you might like. If you were a menthol smoker, be sure to get a menthol juice. If not, get a tobacco sampler.
If you were not aware, there is a sub-forum here:
Smokeless Image just for Smokeless Image customers. Everyone there has used the product and likely can answer any questions you may have. There are also demo and review videos available there of SI products.
Good luck and welcome again.