Having spent a large part of my adolescence and young adulthood immersed in novels, especially 18th-century and Victorian novels, I learned much about being at home and paying social calls. Ladies and gentlemen got in their carriages and went from house to house, leaving their cards, or being shown in to the drawing room. If you were "at home to visitors," you sat in the drawing room and made conversation with the various callers.
I think of the Book Blog Hop as an electronic variation on paying social calls. Go to Crazy-for-Books, read the instructions, and pay some social calls on other book bloggers. http://www.crazy-for-books.com