Keep the list of resources that are part of the solution you have built or want to build on Azure. Example of Resources – Virtual machines, Storage, Public IPs, Bandwidth etc. Use the Azure pricing calculator available here to include the resource items.
Click add items and choose the resources by category and add them. For Virtual Machines Click Compute -> Virtual Machines. The calculator gives you the option to export your resource list as an estimate that you can flash it to your customers
For detailed step on each resource type refer to the FAQs in relevant sections.