Rendar, Node.Js, React.js and Database EXPERT Required

Hi,
I am new to all this above and I DO NOT NEED ANYONE to do any work on this. What I need is someone that can explain to me how all this works so I can understand it.
I have a developer working full time on my projects but as I am new to it, I have no idea about how any of it works and hence l need some one to explain it all in detail.
My developer is working full out on a number of projects and don't want to bother him with teaching me.

You need to have a render account and a demo/active website to show me how it works.
You will not have access to our account, you must have your own.

You also need to speak fluent English.

Do not send a proposal unless you are an actual developer that knows this outside in.

Regards
David