Please visit https://gsuite.google.com/learning-center/products/ for a nice overview of G Suite, as well as tools for communication, collaboration, and storage with selectable links for further information on each product.
Be sure to check out the tips library - https://gsuite.google.com/learning-center/tips/
Finally check out the product uses where Google sees G Suite being useful in the non-profit realm. https://gsuite.google.com/learning-center/use-at-work/nonprofits/