The GLAD Alliance has put forward a series of Frequently Asked Questions about GA-1327 (Becoming a People of Welcome and Grace to All). The FAQs attempt to explain what the resolution does, what it doesn't do, and why it's necessary.
The FAQs are in pdf format for your convenience (and so you can't start monkeying around, changing words. Oh, quit acting so affronted. I've got my eye on you over there in the corner.) You can find the FAQs here.