Like RKD in OKC suggests Toastmasters. You can usually go to the first two sessions for nothing. After that they want you to pay dues. Toastmasters can give you direction and lots of practice and I highly recommend it. Practice, practice and more practice helps you be more relaxed especially if you have an audience each time.
Try not to read everything but use cue cards. You are the expert. They want you to succeed. Don't try to memorize everything. You know your subject well then there should be no problem. Control the group. Redirect questions to the end.
