Lots of good advice here so far.
My input would be if your schedule permits, start with sailing. As time goes by, you can always 'go to the dark side' and move over to power. Personal opinion here but I believe starting boating
as a sailor makes one a better boater long-term.
We sailed for 15 yrs, did a lot of Great Lakes
cruising before moving to a 46' trawler
and we've been up and down the East Coast
several times, two winters in the Bahamas
We enjoy the power boat
but I definitely feel that the sailing experience has made us better boaters.