Hello friends, I updated the post with your new insights. I hope you find it better. If not, please reply all you need or even better (Make some pull requests :P).

As I said in the first post, I am the first who is learning Angular.js but I find that teaching what are you learning is the best way to learn. So here am I teaching the best I can.

Of course, there is things that I ignore, so I really appreciate all your comments, so I learnt a LOT about services today.

Thank you.