Go-To Erotica

Do you have a story that you go to for a quick turn on? Or do you try a new story each time? How long have you been reading erotica? How did you find it? Do you prefer erotica over porn movies? Do you write it? If you do, do you write just sex scenes, or have plots? How did you get into writing it? Do you know of a free "class" type thing that offers tips and "lessons" on writing erotica? Do you read from a book or on a kindle?