Hi,
In the Azure portal, open Cost Management -- Cost analysis (preview) using link below, then click Resources. It will take several seconds for the list of costs by resources to populate.
The above should show how much each resource has cost so far for the month you have selected at the top. These amounts are deducted from the $200 credit that is valid for first 30 days of your Azure Free account.
Next click the Download button, and download the usage file to your PC. You may open it up in a spreadsheet program.
Once your first billing period is over and the invoice has been generated, I recommend you go to the Invoices tab, click the context menu all the way on the right for the invoice line, choose Prepare Azure usage file, and then download this file to your PC. It too can be opened using spreadsheet program. This file is the most detailed and is similar to the one you downloaded in previous step.
I recommend you examine the costs of each resource, then check the Azure pricing page for that resource, and do your own calculation to see if the two match. This is how you will learn and understand how much each item costs. For example, if you take the usage numbers from the details and do your own calculation and it doesn't match, you know you need to do some more research/learning.
NOTE: The above procedures will vary with different Azure account types.
If the above information was helpful to you, please Accept Answer.
Thanks.
-TP