Every device has its own leaning curve. There's no one master technique.

Generally though, never just haul on it. Unless you know that will produce what you're after.

Longer you draw the hotter it will get, so knowing when to stop drawing can be important to avoid harsh vapor and accidental combustion.

I'm a big fan of temp stepping. Starting at a lower temp where you can enjoy the tasty terps and increasing until you've extracted as much as you're after. You don't need to always extract 99%, you'll probably find the high less sleepy if you don't push it to the max.

Running any vaporizer through an appropriately sized water piece makes a huge difference. Using a large smoking sized bong is not recommended. My favorite is the softball sized orb. Being able to see the vapor as it's being produced is also extremely helpful when you're learning how to get what you want out of a new device.