Sometimes you just don't know what you need to know [retirement planning, Medicare, Social Security, income taxes]

I am following. I turn 65 in March. I have talked to Medicare advisors. We are in a transition so won’t know for sure if I will take part b right away. But totally looking forward to Medicare(did I really say that lol)…paying like $25,000 for two of us for Blue Cross is getting old. My wife will continue on ACA plan for 2 year’s. I am older.