Today I will be visiting the Masters Academy school in Oviedo, FL, my third visit there since my dragons series debuted. I was reminded again of the importance of these visits when I visited a Borders bookstore in Winter Park, the town where I live. Strangely enough, I haven't visited any schools in the immediate Winter Park area, so when I went to the Borders, I wasn't surprised to find only one copy of one of my books. I spoke to the bookstore manager and mentioned that I will be visiting a school in the area soon, and she said she would order "a few" copies.
In contrast, there is a Borders within a half mile of the Masters Academy, and I have visited several schools in the same area. The bookstore manager says he can't keep my books in stock. In one week they sold 61 copies of just one of my books, and that was without a signing. He orders caseloads at a time and asks me to warn him when I'm getting ready to visit another school in the area.
These sales are in addition to what I personally sell while I'm at a school. I tell the students if they don't have money now, just drop in on the Borders. They always carry my books.
This synergy has really worked out well. Because of my efforts, this Borders places my books prominently, thereby increasing sales through customers who might not have seen them otherwise, and Borders gets customers from my referrals who might not otherwise go there.
In short, it's helpful to an author to work together with a friendly bookstore. The teamwork helps us both.