Textbook in PDF format

MAKE TWO FISTS and join them together side by side. This is the size of your brain. It weighs about the same as a carton of milk. Imagine something this small containing everything you have ever felt and experienced. All your personality traits. Everything you have ever learned. All your memories – from your first, faint mental images of a summer vacation when you were three, through your childhood and teenage years, to your current, grown-up life where you are now reading these words.
Everything is stored in that lump, the most complex structure we know of in the universe, which consumes no more energy than a light bulb. Whoever isn’t fascinated by the brain can’t be intrigued by much