Baron Bonghits

Hey whoever's reading! I've only really smoked marijuana socially in joints, and it's been a fun experience and something I'd like to do on my own from time to time, so I've been googling and stuff and apparently vaporizers are the best and healthiest way to get high. I'm pretty broke so looking around it seemed like this would be a good idea -- its only 20 bucks canadian. I was wondering if anyone happens to have used this particular vaporizer and can comment? Also, I'm a bit confused on this, I just hold it above the flame and inhale the hot air, right? Also also, in general how much should I be packing in?

Thanks much for your time and answers!