I looked through some of them, there's a lot of theory and discussions, but I'm rather interested just in a basic step-by-step guide on what to do basically.
From Meditation, insight, and rationality (Part 2 of 3):
...Basic method: Sit down in a place where there are few distractions, and pick an object to focus one's attention on. The most popular objects are the feeling of breath at the tip of the nostrils / upper lip, and the motion of the abdomen as one breathes in and out. (In this description I'll assume you're using the latter.) Begin by trying to clearly perceive the feeling of the abdomen expanding and contracting; when it expands and you perceive it clearly, attach the label 'in' to that perception, and
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.