dude i can relate, its hard to find good meditation advice without that spiritual crap thats dragged along with it. a good method for me is to get a fan or heater going for background noise, maybe cover it up with a towel to dampen the sound, i tend to meditate laying down its easier, laying down on your bedroom floor is good too i dont know why but anyplace other then your bed seems to be easier. i focus on my breathing for about 10 minutes until the fun starts, dont move or think at all while you meditate, you will screw up but thats fine just clear your mind. after 15 minutes my body goes numb starting with my feet i work the feeling up my body. soon i start to spin into the ground which is intense, your laying perfectly still but your body feels like its upside down, if i meditate for a little longer it feels like a roller coaster ride, my body shoots forward and goes up and down its awesome.

briefly this is whats most important
stay still
dont think (if your mind drifts off just clear it again)
focus on your breathing (should be the only thing your thinking about)

this is what works for me, i hope it works for you