Newbie looking to join a crew
It is probably prudent to get some sailing experience via a local yacht club before you even consider crossing an ocean. I've been sailing a few months in protected waters but am currently sitting in the saloon of yacht off the NSW coast with 5 mtrs of swell and can tell you that it takes some getting used to.
Since being out in the Pacific we've had a few issues with the boat ( it's a delivery ) which were potentially dangerous and, in my view at least, not the place for a newbie.
Best wishes for your sailing endeavours though.