Developing Web Applications for Practice. Decided to try and build a site that has a collection of games. What resources can I use to begin?

Hello StackOverFlow Community

I am currently working on my web development and web application development skills. The goal of this small project is to develop a web app that takes the source code of several opensource HTML5 games along with JS games to be accessible all from one application.

I am not asking for advice on the code I need to write such an application because I am familiar with the tools. I am simply asking where I can start with developing such an app. (e.g. resources, youtube videos, etc.)

I created a UI mockup of what the site should look like. It is relatively simplistic.

UI Mockup at a Basic Level

Any advice is greatly appreciated.