Here I am posting basic Shamanta (Breath) Meditation instructions.

Breath meditation is the starting place and you can choose to advance to Vipassana (insight) meditation. I would recommend doing the breath one for at least a year first.

Posture:
The only things about posture are to keep your spine straight and sit erect (Cross legged on the floor or in a chair, Whatever is most comfortable.) If you sit "full Lotus or cross legged get a pillow or 2 under your bottom as your legs should be lower then your waist. Slightly push the back of your head towered the ceiling like there is a little imaginary string pulling. Keep chin tucked a little. Now your spine should be straight all the way into your cerebral cortex (Brain stem). Place hands comfortably. IE: Lay left hand on lap, palm up and place right hand .palm up into left hand. Now bring thumb tips together like you are holding a piece of paper between them. Tuck tongue behind upper teeth and allow chin to drop slightly while keeping mouth closed.
Eyes can be closed (this is what I do) or open very slightly. Allow shoulders to drop to comfortable position.

Beginning practice:
Do what is called a "body scan" Start with your feet and see is there is tension there. If so relax the tension with focus and muscle relaxation. Now move on to ankles etc etc. Covering every part of body. When you get to you scalp make sure it is relaxed and soft feeling
Breath from abdomen (Stomach) and take 3 deep breaths like this. Blow out most air from lungs without feeling too uncomfortable. Take in a nice even breath as much as you can hold without feeling uncomfortable. Hold it until you start to become uncomfortable. Let breath out as far as feels comfortable(Remember breathe with abdomen.) Repeat 2 more times. breath regularly and focus attention on your breath. For some people it helps to think "In, I am breathing in.-Out, I am breathing out. You will notice after a bit that you attention has wandered and you are thinking a thought other then focus on breath. When you notice this gently bring attention back to breath and release the thought or train of thought. This is a crucial point when this takes place as it retrains your neural pathways to re-orient your focus. Do not judge thoughts or "try to stop them." Just simple let go of it and refocus on breath.
Keep this up for about 10 Min's. It is good to have a timer of some sort. I use http://treeleaf.org . I generally start me students at ten minutes then after a week move to 20 Min's.
Mornings or at night is best. Before things get going for the day or after thing calm down. I do both when I can.
Have a place you use that is quiet and peaceful. Do not have any music or chant mantra or anything at first. It takes work but this will be VERY rewarding. There is much more to this and I will be posting a furtherance of this lesson next Saturday. You have enough information to get started as I like to keep things very simple. Your comments and questions are very welcome. Just post them and I will respond. If they are of a personal nature then use send message option. Thank you and ~Namaste"~b