Have you considered:
Contacting your state insurance commissioner to see if they have a senior help line?
Googling Senior health benefit advisor + your state for any government agency dedicated to helping seniors with insurance benefits
Stopping by your insurance agent (who may sell Medicare supplement plans) for an explanation
Stopping in at your local library and asking if they sponsor classes on Medicare (they usually have an insurance agent do this and there is no obligation, and you do get good info)
Contacting your personal health insurance company and asking when their next Medicare open enrollment meeting is scheduled (note-it won't be until the fall).
Most people don't understand their own health insurance, much less their Medicare benefits - go for the objective info.
You are correct, it can be a maze of information.
Only got A dimple, would have preferred 2!