As Columbus knew, the way to go around the Atlantic is south when westbound and north when eastbound because that’s the way the wind blows. From Europe go south to the Canaries, then across to the Caribbean, then north to the US, the across to Bermuda and Azores back to Europe.
Sailing competently and safely in the open oceans requires knowledge which will take some years of practice and study to acquire. Start crewing in other people’s boats and you will learn a lot faster and save a ton of dough. Believe me, owning a boat is not half as much fun as it seems. I rememebr when I crewed on other people’s boats and now that I own a boat I sometimes wish I didn’t. You either have money to burn or you are going to spend more time maintaining stuff than actually sailing. If you enjoy the maintenance (like I do) then fine, but if you just want to sail you better get rich first.