Can I hire a opposing lawyer from a different case to represent me in a new different case?

Rules vary by state but I believe what you are proposing is permitted. To the extent there is any conflict, and I'm not sure there is since this...

Just got a call to collect debt from medical bills in Florida from ten years ago from law firm. Where do I go from here?

I agree with the prior answers. I suggest you also ask them how they intend to garnish your social security when that is prohibited by law.

Someone forged my signature on a traffic citation

I don't see a question here. Please re-post.

Should I pursue fighting this speeding ticket?

I agree with the prior answer. "Everybody was doing it" is not a valid legal defense. Nevertheless, I almost always suggest contesting a speeding...

I was involved in a very minor car accident the other party is now claiming their child was hurt how do i make sure it not fraud

Turn the matter over to your insurance company and let them handle it. They likely have investigators on staff for just such a situation.

My friend switched price tag st Walmart

Your friend has committed a crime. It is not likely they will be "traced down" but I suppose it's possible.

Slip and fall deposition .

If you did not witness the fall just tell them that. Show up for the deposition and answer questions truthfully. If you do not know the answer...

Will my personal car insurance cover the other party?

I agree with the prior answer. It does not appear that you will have coverage.

How much money should my father push for in his car accident lawsuit?

He can ask for anything he wants but his requests will not be taken seriously unless and until he retains a good personal injury attorney.

It does appear that your father was at fault. Likely driving too fast for the circumstances.