I was recently new and I can relate, so many choices, so much information to digest. I am one of those people who has to try everything for myself too, so it has become a very expensive hobby. I'll share just a bit of what I've discovered:
For e-cigs that are about the size of a normal cigarette, I would go with either the 510 or the KR808-d.
joye 510 .. You can get a 2 or 3 piece of this model. 2 piece has just the battery and a cartomizer, (atomizer and cartridge in one) and the 3 piece has a battery, an atomizer and a cartridge. Excellent starter kit, but make you sure you get one with 2 batteries, preferably manual batteries. The battery life is short, maybe 2 hours, but it produces massive vapor, good throat hit, and good taste. It is also the most widely used and easiest to get discount parts for. Both cartridges and cartomizers can be refilled pretty easily.
KR808-d - a little longer battery life than the 510, maybe 3-4 hours. This is a 2 piece design, a battery and a cartomizer. There are a lot of prefilled cartomizers for this model, if you aren't into filling your own, you can surely find a flavored carto that you will like. However, you can buy blanks and fill your own as well. With an addition of a 901 atomizer and cartridges, you can turn this into a 3 piece model, the 901 is compatible with the kr808-d. Again, I recommend the manual batteries, you seem to get a better draw from them .. auto batteries have a cut off time, you are done drawing when they decide you are.
Other smaller kits, like 901, 801, 4075, 4082 are ok, but they leave a lot to be desired when compared to the 510 or the kr808-d. Less battery life, less available parts, less vapor, taste, etc.
Now, if you were a heavy smoker, you might want to consider a bigger battery model .. like the Ego or the Riva 510. Both have longer battery life and other added features. But they do not look like cigarettes, they are bigger, bulkier. But honestly, for the beginner, I really think that a 510 or 808d kit will be your best bet. Once you have used them for a while, you can decide if you need more, bigger, better.
Some of the great vendors that have good prices on the 510 or kr808d :
cignot - 510 (about $35.00)
Myvaporstore - kr808d (about $33.00)
There are many other vendors that offer great deals and/or have coupon codes. You can check the supplier forum for the latest offers. That is here:
E Cigarette Suppliers Forum
Welcome and good luck!