You roll a d6 and select the entry that corresponds to that number. Then you roll a d6 again and mark off the number of squares on the chart. Continue until you roll an exit and have squares left or you run out of squares.
For example, you first roll a 2 which is “buy something”. Then you roll a 4 for 4 hours. Mark off 4 squares. Then write in your journal about what you did for that 4 hours. What did you buy? From whom did you buy it? How long did you shop around before you found what you wanted to buy, etc.