Is it advisable to book h1b visa interview slot before getting final h1b decision?

You should be asking this question to your employer's immigration attorney. It is probably worth waiting.

It sounds like you should be okay. But to be sure you should bring a certificate of disposition to an immigration attorney before filing for...

I agree with my colleagues. Your best option is to work with your employer's immigration attorney.

Each case is fact specific. If the officer said it may take 120 days she has 120 days to send you a decision.

Can I change my name before getting my green card?

If you are married and have changed your name on the marriage certificate then you can use that name when applying for a green card.

My fiance has been detained and getting ready to get deported what do I have to do so they won't deport him and married.

I agree with my colleague. You need an immigration attorney to assist you with this situation. He may be eligible for relief but it is best to meet...

Husband applied for citizenship. We wanted to start wife’s green cards process... but she has a expired visa for many years...

Generally it would be best to wait for the husband to become a US citizen.

How do I apply on green card ?

She can not file for your green card application until she turns 21.

Generally you need permission from the USCIS called advance parole if you are leaving the US while a green card application is pending. If you are...

AOS

AOS stands for adjustment of status. Generally you must fill out a form I 485 and supporting documentation to be eligible for a green card.