The most economical method would be oil production, assuming you have enough material to make it worthwhile. Failing that, it's cooking. The thing to remember about cooking is that you want to eat the THC, but not the green stuff. You can extract the THC+oils by boiling your material in water with a stick of butter, straining out the solids, and letting the butter gell on top. Cook with it like you would normal butter. Your tea problem is related to this, also. Add a bit of oil to the water.<p>
You might want to try a vapourizer, also.