Can I apply for my green card without my husband?

Were you inspected by an immigration officer when you entered the country? You may be eligible to apply under the VAWA provisions.

Landlords in most states are allowed to ask applicants for proof of identity and eligibility to work under U.S. immigration laws, such as a...

Why are some Lawyers recommending to refile our I485 & I601 instead of appealing and vice versa? Both were denied.

More details would be needed to determine the eligibility to re-apply.

It would depend on the type of income is considered to be. It would be advisable to speak to your company's attorney regarding the matter.

Does Green Card priority date depend on Place of Birth

The Visa bulletin lists priority dates based on your nationality, which in this case would be India.

I am getting married after my naturalization interview but before the oath, can I change my last name by the oath ceremony?

You could but it would be easier to have the name changed before the interview.

My naturalization interview is coming up, since my application I have gotten engaged, do I need to disclose it in the interview?

No, you are not required to unless you get married before the interview date.

What is maximum amount of money I can get in PayPal per month?

You are not permitted to work for another employer besides the one stated on your L-1.

Along with 2 pictures for I-485, do I need to submit separate pictures with G-325A ( of me and my petitioner)?

Yes, you need to attach a photograph with each 325A form if the instructions state so.

What happens to the person after he is denied at immigration (port-of-entry)? Does he have way to reach to outside world?

You can try to reach the airport's border protection to see if you can get in touch with him.