Ice Hash is simple as hell, its not the most potent, but the first batch can be if done properly.
Tools =
Blender or beaters and a bucket,
Piece of Window screen or Reusable Coffee Filter,
2 Paper Coffee Filters
A clear jar to strain ur mix in (Coffee Filter must be able to be put over the top so nothing will leak thru),
Ice & Water
Take ur trim and throw it in a blender or bucket. Then add ice and water to cover the trim. The ice is the most important thing here. U want the ice to freeze the leaves, then aggetate the leaves by blending or beating and the trichomes will fall off into the water. The more u blend or beat the less potent it will become so I suggest doing this in stages.
After u mix ur leaves and ice water around for a bit u are ready to seperate the bulk of the leaf matter from the water. Take ur piece of window screen and tie it over the jar, leave enough room on top for all the leaf matter to collect, if ur jar is too small u may need two or more jars to complete this process. Simply pour all ur ice water and leaf into the jar, the screen should stop the leaf from going in. The water is what u want. Take the water and put it into the fridge for an hour or two. When u come back u will see all ur trichomes on the bottom of the jar and whatever leaf matter that made it past the screen will be floating. Carefully pour off as much water as u can without pouring out any trichomes. Finaly u take a paper coffee filter and put it over a jar just like u did with the screen and pour your mix thru there. The trichomes will stay in the filter for u to collect. I always do this twice, once beating the leaves for a short period of time to get my personal stash and another time when I beat the leaves for a long time to get the shit I share with my friends...