What worked for me was basic yoga asanas to loosen up and then closing my eyes and focusing on relaxing every area of my body from my forehead, eyes, jaw and so on. I would do this thing where I wouls stretch my arms up as high as possible and tense up and much as I could and then relax my body as if to touch my toes. Works great if you have a tight neck or back.

I never saw a need to go beyond 30 minutes. In my opinion there is no right way. The breathe is key. Irregular breathing is a problem for many of us if we spend most of our day sitting in front a monitor tightening up.

I made meditation the top priority of my day. I do not leave the house or answer the phone/door until the two hours are finished.

You should read the book Power of Now. It will give you some tips.

Not one who meditates, but my mom advocates it. She says that having done meditation for a while (over a year? I'm not sure how much longer than that), she can now feel positive effects just after 5 minutes.