THE OLD GUY looks back at the years posts. Some of them are pretty good. To start off with the three that deal with boat maintenance.
LASERS COIL THE LINE. January 19, 2011 This is worth looking at unless you are an old hand at handling all kinds of long ropes.
LASERS REVERSE THE SHEET July 17, 2011. When you do it depends or you schedule. Once a year at beginning of season if you don't sail much. Problem for us in Florida where we sail all year long. Don't wait till you see the wear at the ratchet block.
LASERS POINT THE RIVET AFT. October 25, 2011. Even the most experienced can forget to do that if you are rushed to get out to the races. Come early and mark your top mast and bottom mast so you have to be looking at the marks as you mess with the mast and the sail.
I have twelve more that I pick out as pretty good. They will be coming next.