wiggedy

Based on your screen name, I would suggest telling them that if they sign up for your newsletter all of their wildest dreams will come true. ;) [about 16 years ago]
How can I get more people to sign up for my e-mail newsletter?

Since you say "more", I would suggest asking those you have already trained for referrals to others they think may be interested. [about 16 years ago]
How can I get more freelance training work?