You may want to do a little warm-up yoga sequence before sitting, especially if you are going to meditate first thing in the morning. 

If you find you don't need to warm up, that's fine too.

You can try any position you have seen, but you can also just place your hands in your lap or place the hands on your knees with the palms up or down. Find a position that is comfortable for you.

Make sure you pick a time when you can consistently devote yourself to this practice. It doesn't have to be lengthy. Ten or fifteen minutes is a good place to start. 

When your timer sounds, open your eyes. 

Take just a few moments to notice how you feel after your practice. 

Meditation is being attentive to the fluctuations of your mind. 

Most of the time, we completely identify with our own thoughts, meaning there is no separation between the thoughts and the thinker. Meditation begins to break down this relationship. 

When you first start, set your timer for five minutes. 

When you are ready, begin to add one minute to your sitting time. Slowly work up to ten and then twenty minutes.

If you can sit on the floor, have blankets or a cushion to sit on. 

Try a cross-legged position like sukasana. If cross-legged isn't comfortable, try virasana. If you can't sit on the floor, that's fine too. Find a chair where you can sit up straight with both your...