Well, my mom just entered semi-retirement this week, joining my dad who has been fully retired for several years now. They had started to pick up more hobbies once their kids started leaving the house for college — tinkering with stained glass, bread-making, and making their own bacon for example. However, one thing that they have really enjoyed is the study of wine. My parents began by reading the New York Times Wine School column, which is a great, although somewhat intimidating starting point.