I start at about 190C, then inch it up every few puffs till I get to 220.
It is pretty easy to operate... there is a button on either side for up and down.
After activating by holding in the middle button for 3 seconds, it starts heating up to your preset temp, for 5 minutes, unless you adjust it again. It takes about 30 seconds to get hot, but I let it simmer a bit.
When it gets to temp it buzzes in your hand... you just need to tap up or down to readjust temps and it will vibrate again as it hits the new temp. It is convection based so nothing happens to the weed unless you suck on it.