One of the most exciting things about the Open Educational Resources (OER) movement is that it allows talented and experienced teachers to create resources and share them with others in their fields. If an open textbook (or quiz, or video lecture or worksheet or whatever) is licensed under a Creative Commons CC BY-SA that allows for sharing and adapting, anyone can use it and change it to suit their teaching style.
If you are interested in learning how all this works, you can talk to one of the ten faculty members who are part of the OER Pilot Program. They are in the process of planning their classes and will be teaching them this fall. Look for a report on their experience at the October Professional Development Day.
As the pool of open textbooks continues to grow in both quantity and quality, you might want to consider licensing your own material and sharing it in one of the many OER repositories. If you are interested in learning how this is done, Affordable Learning Georgia has created this short and concise tutorial to help faculty license and share their work.