Questions about DVD Shrink

[Chrispj09]

Can someone help me out with a few questions about dvd shrink?

What exactly happens when you take out some of the audio? There is no need for any other language other than english right (I only speak and understand english)?

Should I keep all the english audio files?

Same with the Subpicture. There really isn't a need to keep any other language than english right? And should I keep only one english when there is more than one?

I have like 25 files on my desktop once I compressed the dvd, which one do I burn?

I can use primo to burn the image right?

And do I burn the movie like I do a ps2 game?

Thanks for All the Help!!!

Chris