I went to print my shipping label for a book and the option where you use the shipping fees on paperback say that you can leave the book on your doorstep to be picked up. How do you do this? I have two little boys and it is quite an ordeal to go to the post office with them. Thanks for any input!

You'd have to check with your local PO.  If they deliver the mail to your door then they might pick it up.  Otherwise I think you have to have something going priority for them to come to your door.  Do you have a blue box near you? When I did homedaycare I used stamps and printed postage and just dropped the books in a blue box when I was out running errands. 

My po picks them up but you have to get on usps.com and schedule a pick up. This is because they go straight to the mailbox. They can't be looking at everyones porches for pkgs. When you schedule a pickup it allows you to state exactly where you will leave the pkg ( by front door, under carport, etc. ) so they know to stop at your house for the pkg.

If you know what time your postal carrier comes each day you can also just meet them out there. Mine comes everyday around 2 so I watch for him when I see him come down the cul de sac I walk down my driveway, he sees packages in my hands and stops on his way to the mailboxes.

I can leave books under 13 oz in my mail box.  You might be able to leave slightly larger books IF they have DC/printed postage.  (So they can be tracked back to you.)  Or my local carrier has a box marked for outgoing mail on his truck, letting me leave it there while he is on his route.  But it does depend on your carrier and local policy.  Some PO's contract out the routes. 

I wish that the PO had a search to find the blue drop boxes.

Amanda beat me to it.  I scheduled one pick up on several books that I left on my front porch.  I have a rural route type service so I can put anything under a pound in my mailbox.  Anything over must be accepted by the post office.

I've put many packages over 13 ounces in my mail box to be picked up, without having to schedule a pick up.  They all have printable postage on them. 

I wish that the PO had a search to find the blue drop boxes. - They do. Go to usps.com and select the find a Post Office option. There will be a drop down menu that you can select Collection Boxes and it will tell you where they are and give you a little map with them all marked on it.

Books over 13 oz ... can be left in your mailbox for pick-up if they have printable postage (and the return address should match the street addy), stamps must go over the counter. 

Thanks for that tip Melanie! I didn't know that would show the drop off boxes too!  :)