This is from a blog for musicians but the tips will work for anyone really. I will add one piece of advice, if you already have a personal account and are starting one for your project: Get an app or browser add-on that will allow you to switch back and forth between accounts without having to log in and out each time. It will encourage you to keep both active. I’ve used echofon for over a year and would recommend it if you use firefox and/or have an ipod touch/iphone.
Twitter 101 for bands – 5 tips to get you started
Stick With The Indies 