Shopify App Development & Architecture Basic

[developerify]

Hi,

I am new to Shopify app development in fact new to any kind of web development but I have coded in Microsoft technologies a few years back. So I am not new to coding.

I am looking for resources that can teach me Shopify app development basics (theory) and the basic architecture of how apps work and communicate with the store.

I also want to understand the basics of which technologies/tools to use for eg: right now I am considering node.js/react.js

I am getting sporadic information from the web and Shopify.dev but did not find anything covering the basics.

Any help with resource links from experienced developers will be extremely helpful

Thanks!