1. DoGooder site by See3 communications in Chicago collects some great cause videos. Browse their site for inspiration.
2. Enroll in Introduction to Public Speaking on Coursera. No matter what your field of work, we all work in communications. Dr. McGarrity at the University of Washington presents one of the most helpful and entertaining courses you’ll find on the web. And it’s free. You can skip over sections where you are asked to create speeches. Nonprofits will find great advice in the part about persuasive speeches. You can apply his advice to all forms of communications, not just speechwriting.