Prerequisites

Before attempting to contribute, make sure you have the required software:

If you have never used Git or Github before, this video helps: https://www.youtube.com/watch?v=mJ-qvsxPHpY

Contributing

Here is how you can contribute to this project:

Create the necessary database for this project. All the commands needed can be found in .../game-shop-server/db/db.sql. To avoid any errors, you should use the same credentials, which can be found in .../game-shop-server/.env. If this is your first time using PostgreSQL, you can watch the first 37 minutes of this video(but use the info in /.env): https://www.youtube.com/watch?v=J01rYl9T3BU.
Fork this project to your account
Clone your fork
In your cloned project: cd game-shop-server
Install the project's dependencies: npm install
Do the same for game-shop-client: cd game-shop-client and npm install
In game-shop-server, start up the API server by running this command: npm start
In game-shop-client, start up the frontend server by running this command: npm run dev
You will be able to see the web app in your browser at: http://localhost:3000/ and the API response at http://localhost:3002/api/v1/products
Code up your solution and commit it to your fork.
Make a pull request and I'll accept it if it works.