Yes. Notice of the time and place of any regular board meeting should be given to all owner’s prior to the meeting.
Every Association is different and you should check your governing documents for specific meeting requirements.
Executive Sessions are generally provided by state statute so an HOA board can take up privileged information and private matters. Members do not have a right to attend these sessions unless they are to be part of the proceedings being discussed, such as being part of a disciplinary action or personnel matter.