There’s a new law in the Land of Lincoln! Yesterday, while ringing in a new decade, Illinois also saw the official start of legal cannabis sales for adults 21 and older.   Illinois residents can now purchase and possess up to 30 grams of raw cannabis, cannabis-infused products containing no more than 500 mg of THC, and five grams of cannabis product in concentrated form. Visitors to the state can purchase half those amounts. More than 40 dispensaries throughout Illinois have been approved to sell…