Questions before starting to sell

Hey all!

So before I start asking the questions I would like to explain some things first of all. – I am new to amazon selling and want to do it as a side thing, so I have very basic to almost 0 knowledge kn amazon selling, which is why I am turning here to ask.

So my general idea is to sell some products, from a company or companies in my region where I live. To do this (and here are now my questions); – Do I need to open my own company here or can I sell it via someone elses company (asking regarding bills) – Usually I am a buyer on amazon, and whenever I’ve received a package, i got the product within an Amazon box. If i want to sell first hand from my home location, is it even possible to ship them in these boxes, is it necessary? – How do I decide the shipping method, do I use local post companies or DHL, etc. – How do I set the price for this? – are there any risks or other important things i should know?

I’m very sorry for these banal and basic questions, but when trying to search in internet there are too many informations on top of each other and it seems difficult to find exactly what I need.

Thank you in advance and have a great day!