Forms I can submit along I-485 ?

it depends on your status -- normally if you are a USC you need I-130, I-130A, I-485, I-765, I-131, I-864 (possibly other I-864's) and all...

Is this timeline normal across the board or can I take any action to help expedite the process?

If outside normal processing time you can place an inquiry with USCIS -- see their posted processing times for your type of case.

I filed I-751 in january 2017 as divorced. My second husband wants to file petition for me while I-751 is pending. Is it ok?

Your first marriage will be scrutinized anyway so best to proceed with that application rather than trying to go through the process of abandoning...

The H position can certainly be different than the PERM position as the green card case is an offer for future employment and there is no...

I want to marry my boyfriend of 3 years. His work visa has expired. He has a valid passport.

Apply for a marriage license in the town you are living in . After marriage you can then apply for him to become a permanent resident and i...

Can I add a name to my son birth certificate as another first name without the father premiasion

check with the Clerk in the County where he was born to see what their procedures are for amendments to the birth certificate.

Can I travel with an Advance Parole document for a vacation? Marriage based I-485 is pending and I have never been out of status

Yes this is fine for vacation, business or whatever travel you desire as long as you return before it expires.

Can my daughter travel on H4 visa to attend her college in USA while my (Principal H1B applicant) visa stamping is in progress

If she has the H-4 visa, she should be fine to travel.

Can i file H extension when my H amendment decision is pending?

You may file the extension request even though no decision on the amendment.

What additional documents do I need if applying for a change in status from an O-1 Visa to a B2 visitor's visa?

important to show why you want the visitor visa time -- itinerary; prove you can stay and visit and not need to work (sufficient funds for...