John Haydon is a Boston-area social media marketing guru. He has one of the best websites I’ve seen that gives a step by step of tools, tips, and suggestions that you can use to dramatically improve your Twitter knowledge, and thus your Twitter presence. The goal of his website is to help nonprofits bring in more funds. I think if you read through his various tips, you’ll be fulfilling his goal.
And if you want to follow John on Twitter, his Twitter name is @johnhaydon