How to get into the e-commerce area?

It looks like no one is going to jump in.

I’d say one of the best things you could do to understand e-commerce is to start a store. Sell something you’re interested in and just set it up from start to finish. There’s no better way to understand the challenges and options available than to do it from the perspective of the people you’re hoping to help.

Other than that, find a cart you like and start working with it, even if you never publish a store, act like you are or find someone who needs one that you can build. I don’t think there’s an easy way to figure it out other than to just do it.

As what is my question. Running a site? Doing the technical part? Both?
Yes, you’re correct about the technical side. Other things that can help are accounting and finance. (Either courses or textbooks if you can pull them off). Econometrics is a good idea as well.

I believe that best way to get the feel of e-commerce is to start buying from online stores. Then as what @funkdaddy said, start a store on something that you are very much interested.While doing this, start reading and learning about accounting, merchandising and investments. You will learn along the way knowledge about website technicalities.