I think Aiurily's videos are very helpful.
Basically you start with a Wildfire and you blow all your ogcd abilities and repeat every 60 seconds. Overheat at every odd numbered Wildfire after the first one. Use Cooldown when needed to stay in the 50-90 heat range. This is the core of the job, pretty straightforward as long as you don't mess up and overheat when you shouldn't.