Any information on moving to Costa Rica

My advice is decide what kind of area you want to live in : beach, mountains, city, small town, then pinpoint some areas that look good to you. It's hard to give you suggestions until we know more about what kind of lifestyle you want.
Beach is nice but also very humid. Mountains are cooler but can also be very humid. But the beach is ALWAYS humid except maybe in Northern Guanacaste.

Are you looking for a small town without a lot of night life? Or mostly quiet and nature? Or do you want to live in a Gringo Commmunity or Tico? Do you speak Spanish?

Once you can give some of this info then we can help you further.

You can read about residency here: https://outlierlegal.com/

The required National health insurance costs anywhere between $80-200 a  month or more?, depending on if you are a Pensionado or Rentista (see link above re residency). As to how good it is: It depends on where you live and who your doctors are that work in your area. I'm glad to have it in case of a heart attack or cancer or something. But for colds and smaller things I hate it, as it's a pain to use where I live: lines you have to wait in at 6-7am, another line to get your medicine, etc etc. So I use a private discount plan for about $18 a month which gets me $20 doctor visits and discounts on tests etc. But any legal resident HAS to pay the nat'l health plan called CAJA or EBAIS whether you use it or not.

Hope this helps.