Income must be from authorized employment. The Court of Appeals for the Ninth Circuit has stated that immigration laws are "incredibly complex"...

After I file the I-129F for my fiancé will he still be able to go back and forth to the U.S. on his current visa (BBC).

It is highly likely that he would be denied entry as an intending immigrant.

Is living the the states over 10 years grant you any rights that the new immigrant don't have ?

No rights. Just the possibility of applying for cancellation of removal if placed in removal proceedings. The Court of Appeals for the Seventh...

Citizenship when you marry US citizen.

It has to be valid where it took place and it must be for love, not a green card. The Court of Appeals for the Fifth Circuit has stated that...

Separation and green card.

Unlikely. To get the green card, the marriage must be viable.

I plan on going to India in Dec 2013. Can i get my L1B visa stamp with a expiry beyond aug 2014?

If there is an underlying petition to support such an extension, then yes. Your employer needs to retain an experienced immigration lawyer to...

H1B Extension filing from India

The chances of approval depend on the facts of the case, not where you are physically. Your employer needs to retain an experienced immigration...

Do I have a good chance of filing for myself to migrate to the US if I have a Bachelor's Degree?

Nothing in your posting indicates you can file for yourself. You will need a qualifying family or employment based petitioner. The Court of...

Should I contact an attorney? Do I have a case?

If you received the education the loans paid for, then yes, it appears fair.

Please advise me

Your children will need to be at least 21 years old in order to petition you. Nothing else is apparent from the few facts you give. The Court of...