Is it legal for a cop to detain and interrogate a minor regarding a crime with no probable cause?

Depends on what you mean by detain. I'll bet the cop characterizes this as a "consensual" encounter.

How do i get him out and charges dropped for assault on his brother which is real stupid

Talk to his lawyer and find out the reason for the delay.

It means he has a hold and likely can't bail out. The hold can be a warrant from another case, an immigration detainer or something like that.

House arrest is a privilege. If you screw it up, you likely do the rest of the time in custody, with additional time for the probation violation.

Do I have a chance of beating my infraction-"underage with BAC of .02%"?

Zero tolerance is a tough law, but you're so close, you only need to exploit a small margin of error to get to reasonable doubt. You certainly...

Can i get my license

No attorney should ethically be advising you to not appear on a lawful warrant for your arrest. That said, I don't know that these warrants age...

Can I sue a bail bondman for entering. My. Home illegal Searching. And. Harrasment

First, re-read your post. You. Have. An. Unhealthy. Relationship. With. Periods. You should retain a lawyer to review your claims. If you didn't...

CAN THESE TICKETS FOR 1) CARELESS DRIVING AND 2) LEAVING THE SCENE OF AN ACCIDENT BE DISMISSED?

Possibly, but that doesn't just happen because you want it to. You need to get counsel and fight. That's how cases get better or dismissed. Get...

If a person is no billed and then indicted on the same case a week later but the case has taken over 5 yrs to go to trial what

If the matter was indicted within the period indicated for the statute of limitations, you may have a motion to dismiss for pre-indictment delay.

Can you file a new Habeas Corpus petition after the appeal is final if you already had filed one before the decision?

If your habeas wasn't decided on the merits, you can probably file it now that your direct appeal has been denied.