My notes are mostly in my head. :P

Actually, I have a notebook and a private wiki where I have written down some stuff. I have a lot of bullet points, question marks, and snippets, plot seeds, names and timelines, etc. But my outlines are very loose. I am writing book five now and only sort of know what the major events will be.

When I wrote book one, I had very little planned out, though by the end I had a vague seven-book arc in mind.