for me: - small business bookkeeping n tax laws - hiring n managing employees - real estate development n zoning basics - camping skills- building a fire, steering a canoe through rapids, casting a rod - pop sci & tech books, biographies of inventors

also - basic plant n wildlife identification & knowledge of edible berries - bible stories and christmas hymns and basic prayers - trivial pursuit, gin rummy - good navigation/ map skills - ability to ski and swim