Rental websites: Go to www.homeaway.com, www.vrbo.com or www.vacationrentals.com to see how homeowners list their rentals. It's also a good way to find out how competitive a market is. Look not only at the number of listings, but especially the number of bookings on the reservation calendars.
Guides to renting your property: Look for Christine Karpinski's book "How to Rent Vacation Properties by Owner" or Alfred and Emily Glossbrenner's site, www.fullybookedrentals.com.
Free information for experienced homeowners: Go to http:// ownercommunity.homeaway.com.