Tips for Using AI Image Generation and Discounts for Non-Profit Organizations with Gamma App

Hi team, first of all, I want let you all know that I was using Gramma to help my church youth ministry on a meeting presentation. My church members just loving it and asked me how did I do it. I login and show them around the basic function. But on the point of creating AI image using prompt. Everyone including myself struggle with it. first of all, we don't really know what are the differences between the models. Also, in terms of prompting with images, this is still quite difficult for someone who might not familiar with the type of art style or how much details one should prompt about it. I wonder what's the best way to educate myself and others to do it? By the way, is there any non-profit organization discount or license we can grant for non-profit organization users? https://gamma.app/docs/Zetei-Youth-Ministry-Parents-Meeting-ufgwc8jmeuvcytc