Spanish goal

I'm nearing the completion of the first part of Rosetta Stone.  There are five parts, each with 4 units.  It's getting hard, but I've actually used it with native speakers and they can understand me.  I'm having a great time, meeting new people too.  I just read that doing things like learning a new language or working crossword puzzles actually may prevent alzeheimers disease.  I just ordered a Spanish crossword so I'm planning to be a very healthy senior one of these days.