Zen meditation is probably best experienced by joining a local group. But you can do it alone. Zen meditation is normally practiced sitting on a cushion on the floor. There are two main items used for Zen Meditation, called zafu and zabuton. Between them, they can take the edge off sitting on a hard floor surface.

Uses of zabuton and Zafu:

The zabuton is a mat placed on the floor.
The zafu is a cushion that is placed on top of the zabuton.
They can help to take the pressure off your legs whilst you meditate.

Why you use cushions for meditation?

The idea of using cushions is to help you focus your mind on the meditation itself, rather than any aches or pains that you could experience whilst sitting on a hard wooden floor.

How to do the zen meditation?

The aim of Zen Meditation is to simply sit and open the "hand" of thought.
Traditionally, it is practiced in a sitting position, with folded legs and hands.
Your spine is kept upright during the meditation.

Sitting Positions:

There are several different sitting positions that you can take whilst practicing Zen Meditation. Select one which is comfortable for you. You can learn the sitting positions at http://cosmichealing.blogspot.com

Once you have reached your desired sitting position, half lower your eyelids so that your eyes are neither fully open nor fully closed. This will allow you to stay awake whilst not being distracted by outside objects.

Focus on Breathing:

When you start to practice Zen meditation, you will begin by concentrating. This usually involves focusing on your breath, often whilst counting. Over time, you will find that you can concentrate your mind easier each time you start to meditate.

Group Meditation:

Zen meditation is probably best experienced by joining a local group so that you can get the most out of the various teachings associated with it, together with the support that a practice group offers.

Spend some time regularly for zen meditation.