You can put the date you want your B2 status to start but you have to submit your application while your H2B status is valid

Your green card holder husband can file an immigrant petition for you. You may apply for adjustment of status in the US if the priority date is...

You will need to apply for a new EAD based on the would be pending adjustment of status application

You need to apply for an F1 visa in order to reenter the US. Advance parole does not apply to your situation.

Yes, it is okay to have more than one I-130 filed on your behalf.

The answer depends on whether the employer will allow you to continue working even if you don't sign the contract. I doubt that you will be...

Yes, you can file an I-130 petition for consular processing in Colombia. She needs to return to Colombia prior to the expiration of her authorized...

I don't think that sending the marriage-based green card application will be an issue

If the mistake is immaterial, I doubt that the NVC will make an issue out of it

The extension in the US only extends your stay but not your visa. If you exit the US, you need to apply for a new tourist visa.