Private, 1st Class
I normally use the demo account for 3 months to understand the trading style. I would recommend you to open a demo account with any broker before trading with the actual funds since it will help you to practice and understand your broker well.
I hope that helps
You did right for doing it for 3 months as it takes time to know and then practice some of the basic tools of Mt4. Then you should not leave demo because you will need it to study new tools and strategies in future.