There is nothing more confusing or complicated with an eGo or Riva than any other ""Starter"" e-cig.
I recommend the eGo or Riva. I would recommend checking out Liberty Flights. Here is a link to LF in this forum:
Liberty Flights
From there you can click onto their website. The Riva is $29.99 after your ECF discount. Shipping is $2.99. At check out enter discount code
ECF and the discount is taken right off your invoice. I have used LF, (many of us here have used them) and they are a good company to deal with.
They also have drip tips, cartridges, cartomizers, e-juice, atomizers, etc. I like the flat shipping charge of $2.99 - period.
As I said, there is nothing complicated about the eGo or the Riva. Getting anything smaller means you are charging batteries all day / night long. Mods are good, but I don't see recommending them to someone coming into the forum looking for a good, basic, first pv. Mods come & go. Good mods will always be available for you if and when you are ready to purchase one.
A note when ordering your e-juice. Order small bottles. If you don't like it, you don't have a lot of money invested in it. If you like it, you can always order a larger bottle.
Happy Vaping,
Paula