Sit at end of a chair, your lower back straight (so your whole back forms the natural, self-supporting "S"). Make your palms rest on your thighs or knees, in a

Sit at end of a chair, your lower back straight (so your whole back forms the natural, self-supporting "S"). Make your palms rest on your thighs or knees, in a way where your arms don't place strain on your sitting position. The rest doesn't matter, over time you will experiment and find what suits you best - opened eyes vs closed eyes, etc. etc. I prefer opened eyes as closed eyes make me sleepy/dreamy. Briefly realize, that for a few minutes starting now, nothing in the whole world matters to you, except of what you are going to do right now. Look inside. Initially, your random thoughts are a great help because you can observe them. By observing them, you can be sure that you are indeed looking inside. Their natural reaction upon their observation is their dissipation and vanishing. Whenever you read a thought, hear a sound, or see an image, only focus your attention on it, which makes it dissipate. At one point your mind will be cleared. That is OK, just be. Don't "try" to stay in that state. Don't "try" anything. Just when a new thought pops up, focus your attention to it until it dissipates - this is usually a very quick process. Rinse and repeat. :) (edit: by focusing attention I don't mean entertaining the thought, entering it, but rather only observing it from the outside, just knowing that it's there, this is a very subtle effort.) (edit2: one more thing - eventually you're going to be finding yourself thinking about something, building air castles, day dreaming, etc. - always just bring yourself back into the practice, right upon realizing that your have strayed.)