I’m a Shopify developer with experience in Liquid, HTML, CSS, JavaScript, jQuery, and a bit of ReactJS. I’m looking to expand my skill set into Shopify app development and would greatly appreciate some guidance on where to start. I’m eager to learn and dive into building apps, but I want to make sure I’m on the right track from the beginning.
The best place to start is by following Shopify’s tutorial on setting up an app with Shopify CLI.
Take a look