Filing for concurrent H1B

You are correct. You can only work for your H1B sponsor. You can always file a concurrent H1B to work of another sponsor (even part time). ...

Any possibilities to get RFE for H1B 2014 for my situation?

There are always chances for a request for evidence (RFE). Specially if the sponsoring company does not have an attorney handling their petitions.

How to get out of a B-2 visa sponsoring?

I do not have to do anything. You should not get in trouble if he overstays his visa. It seems to me like you "invited him" and did not "sponsor...

IS THERE A POSSIBILITY THAT IF I HAD A REQUEST FOR EVIDENCE OF AN I-130 APPLICATION THAT IMMIGRATION WON'T BE SATISFIED

My colleague is correct.

Hello, I have won green card lottery, I am getting married in 3 weeks time. do I need to let them know now or at interview stage

You need to let them not AFTER you get married.

Will i get green card through my spouse who became usc through marriage even if i overstayed my visa for more than 4 years?

1) As a beneficiary of an immediate relative petition you overstay will be no barrier to adjust your status to that of a legal permanent...

As long as your marriage is legal and for real, you have nothing to worry about. Your wife must be honest at the interview.

Where do I begin? Family-based immigration, naturalization, citizenship?

I agree with my colleague.

Where to file 601 I unlawfull provisional waiver

I suggest that your read the instructions very carefully. I would also suggest that you hire an experienced immigration attorney to handle your...

What happens if I try to reenter USA with my green card after 2 years staying outside the country?

I agree with my colleague.