You should hire a criminal defense attorney. If you can't afford one, you can request that the Public Defender's Office be appointed. There is not a lot of information here. The failure to have your miranda rights read will only be an issue if you made admissions or statements to law enforcement.
If you have any convictions (ie were adjudicated guilty) on your record, you are not eligible to have your record sealed. If your probation was revoked, you were adjudicated pursuant to Florida Statutes. You will need to review your judgement and sentence to determine if you were convicted.
The other attorneys are correct. I would only add that if he is on probation for theft and picked up a new theft charge, the Court is not going to look highly upon that, so please get an attorney for your husband immediately.
You would need to ask the Clerk. If you are deemed indigent they may be able to provide you with the transcripts fee of charge. I would also ask the Public Defender's Office, especially if they represented you.