because it was relevant, he cannot already be on a 12 month Extension of Stay without a bank account so those words clearly states his current status, not on an Extension
Where were you married, if outside Thailand have you got the marriage certificate notarized (Embassy), translated and legalised (MTA) and been to your local Amphur to have it registered?
You apply in person at your local Immigration Office where your TM30 is filed. Go there well in advance and get their list of requirements for the Visa you will be applying for except if it is a Non-B or a Non-ED which requires you to get everything from your employer or school and they will tell you if it can be dne in country or if you have to leave and apply outside.