It is definitely not an easy task, not just bitcoin mining but no mining of any type is not easy. I believe that we should be focusing a bit more on what we know and how we can approach instead of risking it all for things that we have no idea. For example, if you are a person who has never fixed any computer before, then do not start mining or make sure that you have a trusted miner friend who could help you, because these machines keep having small problems all the time and if you can't fix it yourself then what are you going to do?

Pay premium price for getting it fixed and that is not acceptable nor profitable. So, it is really difficult if you have no idea how they work, you need to be on top of the game to make sure you could squeeze that last bit of ounce of profit from these machines.