What are my rights as a employee injured on the job?

I suggest you see a Workers' Compensation attorney who can advocate for you.

Do I have to provide the other party with documents I intend to use at trial if they never served a discovery request on me?

Are you in federal court or state court, as the rule vary, Usually you have to provide exhibits and a witness list in advance of trial.

Did you get formal notice from the government with instructions regarding rent?

Can i sue sprint or it's authorized store for forging my signature into a contract ?

Yes, but instead you could also ask for additions things such as Coupons, discounts, free accessories.

What happens if i don't want to do the job after i get hired?

You can tell the employer you changed your mind and leave, as posted.

Can someone dismiss a federal civil suit without prejudice after obtaining a default for wrong jurisdiction?

This question is not clear, but if the case is still pending you can file a withdrawal of the case.

Will my son's grandma have grandparent rights to him if she didn't legally adopt his dad?

It would be very difficult for her to get grandparents rights.

Can we begin eviction procedures if Tenant is witholding rent contingent on demands for replacing carpet?

Most likely you can begin an eviction as posted by the others. I agree with that advice.

Do i have a legal case because a hospital when i was a minor gave me a blood transfusion and now i have hep c?

A lot more facts are needed before this question can be answered. See other post.

An email from your landlord is not a proper 30 day notice.