In order to create a new database on Heroku, you first need to create an Heroku app in your personal dashboard. Then you can attach a Heroku Postgres instance to it as a resource.
Navigate your browser to https://id.heroku.com/login and log in. If you don't have an account yet, you can sign up via the Sign Up button below the login form:
Once you see your personal app dashboard, you can create a new app. If your dashboard is currently empty, you can click the Create new app button. Otherwise click the New button in the top-right corner and select Create new app:
If you want, you can also change the Region so that the database is hosted closer to where you are located. Once you've provided the App name, you can click the Create app button.
To attach a PostgreSQL database to the Heroku app you just created, you need to navigate to the Resources tab in the header of your newly created Heroku app's dahsboard. Then type Heroku Postgres into the Add-ons search field. When shown, select the suggested Heroku Postgres add-on from the dropdown:
The next popup asks you to choose a pricing plan for the database. Select the Hobby Dev - Free plan and click Provision:
