How to get started with Microsoft technology grants and discounts for nonprofits

Quick question once you receive the grant where do you go to use it and what are you able to use it on? there are scant instructions on what to do after we've received the funds. A little more direction would be greatly appreciated. Thank you I'm sure I'm just overlooking something. Also a point of contact would be great as well. I am working as the IT manager for a small not-for-profit. We have been reluctant to use the grant because were uncertain what will be billed for.  Is there a way to check the balance of the grant as you use it so that you don't end up exceeding your plan for expenditures. Please feel free to reach out to me directly. email address removed for privacy reasons