I'm being charged with a battery injury, if i plea guilty what are the consequences for immigration, im a permanent resident

If your attorney practices only criminal law, have your case reviewed by an immigration attorney before you plead guilty or no contest.

You may withdraw your I-129F petition and apply for I-130

My girlfriend wants to visit me here in the U.S.A. what are the easiest and fastest way to visit the US? Please Answer me Asap.

If this is serious, she may qualify for K-1. Talk to an experienced immigration attorney about her options.

Can I do a modelling gig once in a blue moon while on H1B for a different company ?

Depends whether AOS is filed.

Can i go to my home country in this june and come back in july /august2013??

Your spouse's company should seek his extension soon if you want to seek extension closer to the current expiration.

Do I need to get my passport extended for the H1B transfer?

Passport has to be valid for six months.

If it will be a corporation, you can invest but you cannot hold a position which normally an individual will do for pay.

Having both B1 and F1 stamped on visa and using both of them for separate entries to the US

In most cases, CO will allow multiple visas without cancelling the old visa. When you enter clearly mention the purpose of your visit. If you...

Break in permanent residency status.

You may apply. However whether the benefit will be granted will depend on how you presented your case. Talk to an experienced immigration attorney.

Will going to school affect my friend from adjusting her status?

No