Only from my personal experience, there is a learning curve to dripping, and the key was to not get all mad & frustrated when I flooded the atty, got dry hits, or even popped an atty. It was just part of learning what I could and couldn't do with the atty. Understanding that just made learning a lot easier.
But! that is also why I would never suggest a $22 atty, or a RDA for learning how to drip properly. Learn first, with a $6 atty, and then go for the gold. That way you will know what to do with the good atty when you get it instead of destroying it.
In todays world atomizers like the HH-357 are becoming somewhat redundant even tho' some of us still like them. The quality of RDA's have just overtaken them is all, even though RDA's have a learning curve all their own.
So in the end, learning how to get the best that dripping has to offer is a process .... not an event.