Hello, hope you all are well

So I have a domain registered with go daddy and I have created a droplet with the LAMP installation on droplet through the Marketplace, and I can easily connect using terminal ssh to droplet and can navgate through files.

I am new in terms of computers and all I can do in command-line is navigate around make/delete/move directories, I’d like to setup and understand mySQL database and how to setup and use phpmyadmin as well, as I am an aspiring computer scientist.
I am trying to create websites in order to teach my selfs how to handle manage and query database and in order for the website itself for now I will be using a template from internet until I finish my own HTML, CSS and Js project.

If anybody can provide suitable links to guide and help resolve my queries

Much appreciated