Get more specific with your questions.

I think you own a grinder right?, If not GET ONE, you don't need a $20 grinder(although on Ebay $20 will get you a KILLER GRINDER) just find one on Eay for $10 mailed to you and you'll be glad you did.

Pull hard on or semi-hard on the VaporStar, this will keep you from burning any herb and you can slow down if you don't see any vapors(Slow/less air make more heat). The VapoStar responds quickly to the changes in airflow through the VP. If your not geting vapor slow down a bit and with in 2-3 second you'll see vapor building then draw fast and kill the flame while still pulling. The correct way to hit is to kill the flame early enough that you can continue to inhale with enough lung capacity left to fully empty the glass bong of vapors going back to clear again.

Look for the visual clues of the vapors inside the bong. They tell you every thing and this is the VaporStar major advantage along with the 16 heating outlets in the VP.

If your looking for the biggest hit possible, your going to have to pull the flame on - off - on -off -on -off of the VP to keep it from geting to hot but you can learn this also with a little practice.

I don't look for the biggest hit, I don't mine hiting it 10 medium hits vs 4 huge ones. Small hits make this very easy, just stir the bowl add flame let a tad bit of vapor build - kill the flame - continue to inhale as the vapors fade and untill they are totaly gone, repeat intill vapors become hard to get.

Don't overload your bowl it hurts air flow, make temps rise to fast and won't stir well.