The most effective way to drink cannabis is heating(on low) with with whole milk with a little heavy cream added and stirring/whisking vigorously for a while. Then you can strain/filter the milk to take out the actual plant material because the actives will have dissolved into the lipids in the milk, and you need heat to convert the thc. If you want to drink cannabis without using fats you need to grind super dried cannabis to powder, or shred/blend fresh cannabis really well, and drink it with the plant matter, because water does a poor job of taking out the thc and other actives, maybe blending it with just ice and a little water and then letting that solution melt and then filtering with like a cotton shirt, and then heating the water up after filtering, would work since it would physically knock the trichomes off the weed, but I've never done it.
EDIT: I posted before I read the link, the above information is for getting high from drinking cannabis, it sounds like juicing cannabis without heat, or eating raw cannabis thats never been heated, allows you to intake much more cannabis without getting too stoned, which means more health benefits and more effective doses of the non psychoactive/recreational compounds. Or, as the link says, heat the marijuana high enough to remove the thc so you can basically consume as much as you want without getting high.