I guess this should be in a raw weed thread, but so many of the descriptions in this thread match my own experiences that this seems like the place to post them.
My experiments have worked best with the following similar conditions-
weed as dry as it can get,
I usually do this in the morning about an hour after eating a breakfast of an egg cooked in real butter and a slice of "real"buttered toast.
I also usually mix my weed in a cup of Activia yogurt, the kind that contains active bacterias and contains fat, and my usual dosage is a slightly rounded 1/2 teaspoon of weed. I have never experimented with heating it in oil but I can appreciate how the fat is more easily absorbed. Unscientifically I believe that by eating my weed with fat an hour after breakfast, that my digestive juices very active and go right to work when the yogurt and weed hit my stomach. The first effects I feel are a relaxing sensation behind my eyes hat usually begins about 15min. after ingesting. Then as others described it take 1-2hrs for the full effects to be felt. Then it last 3-4hrs at full strength with lingering effects for twice that long.