Before we start looking into the Azure Functions portal, let's look at the process of getting an Azure account. Microsoft Azure offers 12 months of free services (there are limits to how much you can use) and also gives you $200 credit for 30 days to get started. The free account also provides you with 25+ always free services.
You can sign up for a Microsoft Azure Account at https://azure.microsoft.com/en-us/free/.
To be able to create a Microsoft Azure Account, you will need a Microsoft Account. Once you have created the Azure account, a Free Plan subscription is automatically created for you so that you can start building apps to run in the Microsoft Azure Cloud environment.