Tourettes is an alarming diagnosis, in part because of what's not known...we create more fear when we're in the first throes of discovery. But for sure, you're not alone. Continue reaching out. Unfortunately men usually lag way behind women when it comes to childcare issues, especially disturbing issues.
There is a national Tourettes Association, with a local chapter in Atlanta. Tourettes may be considered a learning disability depending on the severity of symptoms, so another source is the Learning Disability Association of Georgia.
I'm an editor of a local magazine called Kids Enabled (www.kidsenabled.com). We have a resources listing in the back of the magazine, and on line for professionals in the atlanta area who work with students/children like your son. You can pick up free issues of the quarterly magazine at Whole Foods, or you can subscribe for about $9/yr.
There is a terrific book called Taming the Tiger, written by Sherry Pruitt, an Atlantan and mother of two boys (now men) with Tourettes. It's an excellent source of information.
Your husband will have to come around in his own time, but don't let that hold you back. You'll learn how to handle your new situation, and be a wonderful mother.
Attention is the natural prayer of the soul.
N. Malebranche, 16th c. French Philosopher