The teacher you need is the person you're living with.
A Friendly Universe: Sayings to Inspire and Challenge YouC-3PO: [about Lando] : Well, he seems very friendly. Princess Leia: Yes, very friendly...
Star Wars: Episode V - The Empire Strikes BackThe man lying on the sofa seemed friendly. But how friendly could he really be if he was a liar?
At even one penny, this book would be overpriced. In fact, free is too expensive, because you'd still waste time by reading it.