How do I make a outline around my text??

i just want to add a white outline around my text thats all

Use BBCode by setting the text to

[outline=white]Text[/outline]

How do you control the size of the outline ?

For additional control you can:

Use one of the outline addon effects

Use an html element instead of a text object and style it with CSS

Create/edit a sprite font with the outline baked in, in your image editor of choice