There is a lot of good information on YouTube videos. Just go to Youtube and enter in a search. I was interested in Medigap vs. Medicare Advantage and found many informative videos.You definitely want to watch more than one as some of these are sponsored by insurance companies.
I usually just listen to the audio and take notes.
For MediGap plans the consensus is Plan G vs. Plan N. Remember that all plans of the same letter designation must offer identical coverage so it usually makes sense to go with the plan that has the lowest monthly costs.
Since everybody does not have access to the same kind of health insurance plan - you are gonna have to be more specific
Medicare ? - What kind - Original Medicare with or without a Medigap or a Medicare Advantage Plan
OR maybe you are talking about a Medicare Prescription Drug Plan?
OR maybe you aren't eligible for Medicare yet and you are talking about some type of Individual Policy - Obamacare or something off the Exchange.
Tell ya what -
If it is Medicare - find yourself a good LOCALMedicare Insurance broker - they write for lots of different companies and can help you find one that meets your needs (and pocketbook). You do not have to pay them for their service. But after you find one and they help you out - you will feel like you should pay them for ALL their HELP. Makes life so much easier to see a good expert - ask around r friends and family to see if they might have a recommendation.