Re: Smoke rings ( not completley on the topic of hookah)
load up a fat hookah (to get adequate smoke) or a cigar, take your hit.
shape your lips into an "o" ish shape, and at this point you can try two things:
a. use your to apply equal pressure to project out the smoke (slow and controlled)
b. blow slowly and controlled from the throat
Blow in intervals, if you keep blowing immediately after you'll kill the rings and create currents that will hinder the rings.
also, make sure where ever you're blowing doesn't have fans going. Ill go start up the hookah right now and see if theres any other tips I can give.