What is the maximum period of stay on H4 visa?

H-1B validity.

Graduated in Nov 2012 -MTR for OPT pending, H1B approved this week, need to go out of US for stamping, do I need waiver?? Help!!

Nothing in your posting indicates the need for a waiver. The Court of Appeals for the Fifth Circuit has stated that "federal immigration laws...

Required Documents?

That is what arithmetic indicates.

If the main non immigrant visa is renewed but the dependents not, but all have valid I-94, is that a problem?

Visa stamps cannot be renewed in the US. I therefore do not understand what you are asking. Your employer needs to retain an experienced...

Where should my husband apply/file for US citizenship? In AZ where he's been working for almost 2 yrs or in CA where I live?

See the instructions to form N-400. The Court of Appeals for the Second Circuit has stated that immigration law is "a notoriously complex and...

Can an H1-B visa holder seek a university degree ?

Yes, provided they continue to maintain their H-1B status.

For I-130 adjustment of status can I file with an expired passport

The facts you provide do not allow for a determination as to the ability to file the I-485.

What is the effect on incumbent visa (L1) when you apply for H1 ?

Depends on how the H-1B is filed.

why would the io give the impression that she was going to deny? Attorneys cannot read minds. You would need to ask her.

I am a green card holder for 4 years and 9 mos now. I got it thorugh my husband. Our paperwork shows that we are married,because

It would be an issue if you are applying for naturalization and USCIS requests your tax returns.