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The Definitive Green Dragon (Revised, Updated, Combined)

This will teach you how to make yourself some potent Green Dragon Extract. I wouldn't recomend smoking any leftover bud used for tinctures because I highly doubt there is any significant level of THC left in those buds. You'd be inhaling burnt plant material for no reason, not to mention it has probably gone through some changes while being saturated in alcohol.

And the leftover bud is not called "hash". If you'd like to learn how to make some good hash check out this post:

Collecting kif and pressing small amounts of potent hash.

Hope this helps

SMG