As your H-4 EAD is based upon your current H-4 Status (after you applied for an H-4 Visa and returned to the United States with it), your H-4 EAD...

Your attorney or employer is supposed to receive an e-mail from USCIS with a Receipt Number. If your H-1B Petition was filed with a check(s), you...

You may state in DS-160 your stay in the United States as such for such period.

Unfortunately, no, as your H-1B Status is for your Employer only, and freelancing will be unauthorized employment.

There is no need to stay with and to work for the sponsor forever. You may move for better opportunities after having your Green Card for more...

You will need to submit I-864 when it comes to filing I-485 or go for Consular Processing. If you need a joint sponsor(s), this is a good time to...

I am forwarding this question to my colleagues with expertise in international laws and Canadian immigration laws.

Best estimates should be accepted as well. Your Lease Agreement(s) and Property records may help you to get your best estimates of your move dates.

Because your I-751 was approved, close to your Oath Ceremony, you may not receive your Green Card by then. Please keep checking your case status...

You may file I-130, wherever you are. However, when it comes to filing I-485 or go for Consular Processing, your parents will need a sponsor(s)...