After learning about particular PMD service projects by e-mail, web site, or Facebook (http://www.facebook.com/pmdorg), check your calendar for your reliable availability.
If there's a match, register online before the sign up deadline. You can find the registration link by visiting http://www.pmd.org/events.phtml, clicking on the project, and scrolling down to HOW. Provide all of the required information, Then you will see a confirmation screen-but receive no confirmation email message.
Then the week before the project, you will be sent PDFs that contain information on the agency we'll be helping, what to expect, what to bring, how to get there by car and by public transit, map, and release form.
On the day of the project, you travel to the project site prepared to participate (with breaks) for the entire project time span. You will also learn how your work supports to mission of the agency served.
PMD projects typically involve 12-20 people. A good number are usually first-time PMD volunteers or repeat volunteers who are working on the same PMD project for the first time, so it's not cliquey.