I dont drive so for say a box of books, I wouldnt be able to pick them up, do you think sellers would drop them off for me, what would make them more likely to, what sould I say in my ad? cheers
People may possibly drop off the books if you state in your ad that they needed to be dropped off.  Perhaps you could list a telephone number so they could call you and you could give them the details.  If you paid them a good price for the books, that would also be a plus.  Don't' expect to get anything for free.  Perhaps you could say something like this:\n\nNeed extra cash?  I may be able to help you!  Now buying secondhand books at fair prices.  Please call 555-5555 for details.
Check out For Sale By Owner information on the web for self study and marketing tips. My company Redwood FSBO, offers marketing materials / flyers, lawn signs, advice, and listings on website for free. \n\nAlso, use flyers and marketing materials and post them around town, or better yet network with business colleagues and family to get the word out about when you open houses will be.\n\nIf you interested in learning more contact Owen Jamison, FSBO Managing director at 978-998-7153 http://www.redwoodfsbo.com \n\nTell him Reggie Sent You.