if it was your only plant i would have told you too keep it alive and just pluck every male flower you could find, but since it's dead well then best not to dwell on stuff ya know?
butane extraction is easy and fun! i think it's so crazy that you can pour it into a glass bowl and it will sit there as a liquid and boil at room temp, awsome to see! but alas it takes more than your average ronsonal can, you need special butane without added smells like ronson adds, they sell it at some stores but ronson tastes like poop.
iso hash is also cheep and easy, just take isoprophile alcohal(rubbing alcohal) and mix it with the product in a blender, chop it around a bit, let it sit for no more than 5 minutes and striain leafs out, then let solution evaporate at room temp for several days, i know it sucks to wait, but trying to evaporate it on the stove or with a hot lightbulb will only vaporise the thc and leave you with low potency tar.
good luck, and before you do anything please read the faq on hashmaking, this site is a wealth of info, there is much more to learn always.