welcome to cf.... learn diesel
electricals, 12 volt stuff, which end is which, how air and water
move,marine carpentry, a/c /refrigeration.... small engine
mechanix....fiberglass repair and building techniques.... is a fun lifestyle--i do enjoy it. oh yeah-- how to sail--is really kinda important to know how to use the boat once ye figger out the pointy end from the propeller
helps--- is cool to be able to catch and prep dinner....
might also be good to learn well how to tell weather
you have more than enough time to do that and sail for practice over 7 yrs time...have fun, smooth sailing,, and, again, welcome.