One good advice (Already wrote so many time): Demo is heart of Forex trading so please practice on demo first before you jump in to live But first learn about what is forex and how to start forex trading. You can start learning about forex by following this link and you will get all of your answer here for sure.
Here is the link Forex Military School
Actually I never find demo account interesting and really I don’t need to give reason for that as we all know that it’s not seeing to be motivated for demo account. I usually trade with Cent or Micro account which is bit more motivated and less risky due to lower funds but I fully agree that the best way is to learn from the link you mention as that way we feel interested since most of the questions are ones that comes into our minds.