Ever heard someone say, Write what you know? It sounds logical, but what does it really mean? To me, it means write what you are familiar with or what you can research. Even if you really know something, you want to weave your knowledge into the characters without the reader feeling like the author is doing the talking or spending too much time presenting minutiae. In my first fiction book, Angel Sometimes , I gave Angel the job of swimming as a mermaid. That was easy since I'd swam as a mermaid for four years. My second fiction book, Dismembering the Past is different. Matti McAllister, a Private Investigator, is the protagonist. But I've never been a PI, so I had to do a lot of research and, as I wrote, I found myself getting inside her head. You may base characters on people you know or people you've seen around town or people you've met online. The trick is to choose something from that person and give that fear or favorite song or way of talking, or wh...