Hey I want to know what effect is this at the beggining or how you make it?
It's a simple scale in with some fade... Check the text presets, there's enough of this there...
As Mylenium says, that is a rather simple text animation.
Here is a good starting point for learning how to animate text in After Effects:
I'm guessing that you're very new to After Effects. I recommend starting here to learn After Effects: http://adobe.ly/bjBT3P .