Who do I need to get in touch with when a contractor owes me money for a restaurant that I tiled for them?

You should contact a construction lawyer pronto, to find out if mechanics liens can be filed in your state.

How do I recover funds owed for a defaulted loan that I paid on a cosigned account?

If you paid more than your share, the you can seek contribution. You don't need to have a specific agreement with the co debtor. If you were both...

Can I sue my (soon to be ex) step-father for money I lent my parents?

Yes. You can sue. However, if he only agreed to pay if she paid the other half, he could argue that he's not obligated if she doesn't pay.

How to file suit in a state I don't reside in?

You may be able to sue in VA if he has certain ties to the state. Depends on your specific facts.

Can i be served at work, when I wasn't present? The sheriff just left the papers with another employee.

This is not good service under VA law.

Can a Defendant withdraw a Request for a Hearing on a dispositive Motion and deprive a Plaintiff of an opportunity to be heard.

If the court is going to deny the motion, then no hearing necessary. And the court won't grant a dispositive motion without a hearing. So...

Very suspicious. Whatever you do, don't agree in writing to make payment and don't make a payment. In some states, the statute of limitations can...