The Maggie's List of Basic Life Skills is from some old post that I can't find, but let's note managing watercraft today.
Here's an idea for the no-foreign travel era: Learn at the Helm at Chapman School. It's a 5-day hands-on course, based in Florida. They claim that, by the end of the course, you will be able to back a 40-ft boat into a slip. I can not do that.
Clearly, if you have been a Naval officer or a Coastie, attended the Maritime Academy, etc, this might be redundant. Studying Charles Chapman's classic Piloting and Seamanship is good, but it's not hands-on.