is it really worth spending your time to something that will expire?
I guess that all depends, it's something for nothing so I can't really see a down side to it. If your already mineing it's a little extra hash, if not it's good for learning how to and gives a little bit without any cost. The guide is quite long just to make sure I covered everything but I think if you have used Linux before you could probably complete it in 20mins easy.