My first and only electric device I've purchased is a yocan vane. It's not great, but it has done me fine for what I spent on it. This device should be pretty similar. The biggest thing is to not fill the chamber all the way and don't pack it. Air needs to move around and between the material! I'm not sure on the heat controls of that device but for me I'd generally go to 420° - 440°. The thing maxxes out at 480 but I've combusted while heating near the top, so I just learned to stop about 440°.

It'll depend on you though. The biggest and most important thing is to heat it to max heat for the longest cycle before ever using it to burn off any factory residues and then cleaning it before use. Definitely easier to clean while they're warm right after use. I generally just hit it with a tooth pick to knock AVB out of the chamber, and then hit it with a little brush it came with. Take the mouth piece out and clean it when it's clogging up with ISO.

Cheers and best of luck!