[Max_Coldheart]

Your explanations could be even more resolving though. For example:

pawn Code:

public MensajesRamdom()//Public what sends the messages

Yes, it can be explained like that, but I'd explain it like this:

pawn Code:

public MensajesRamdom()//Callback that sends the messages

as the term isn't public (people will understand it) but the term is callback, so I'd use it.
Else, it's a good tutorial.