My method for brewing with the moka is fairly simple. What you want to do is use a fine espresso grind, but not too fine otherwise you'll choke the filter and get a bitter extraction. Boil water in a kettle first, and put the grinds in the basket and level off with your hand. Make sure there are no grinds on the threads where the pot screws on, otherwise you get a pressure leak and coffee spill out the side. Always put boiling water in the base and fill it just below the pressure valve, or just on it. Stick it directly on the hob and put the heat on low to medium, and as the coffee comes trickling out the spout, take it off the heat and let it froth out, then put it back on for a bit. Do that 2 or 3 times. What this does is give the water time to saturate the coffee inside and you'll get a good thorough extraction. Take the pot off the heat just as the coffee thins or blondes out, and just as the pot starts to bubble and spit out the coffee. Pour it straight away into a cup pre-heated with boiling water, and that's it. Very rare do I get a bitter or under extracted coffee doing it this way.