IMHO mining is pretty hard, especially if you are new on this field. You will need good GPUs, good cooling sistem and maybe an alternative source of energy or else you will have more chances to make money by simply making trades and investments. But again, this is just my opinion :)
Its hard, but if done right it can be profitable... the hard thing is getting it to work, after that you just plug it and let it work.
That is right, for sure! I don't know how profitable it can get, judging by the increased price of GPUs these days