One of the biggest things you will need to learn is how to use the Azure pricing calculator found at https://azure.microsoft.com/en-us/pricing/calculator/, which you can see in the following figure:
Azure Pricing Calculator
This should help you estimate your monthly burn (consumption) and it is always better to start low then scale up as needed. You can put spending limits on the account and also leverage resource tags to track spending. You can add a tag to a resource, as you can see in the following figure:
Add a Tag to an Azure ...
