There is an Order Board at your Home Station next to the sled. If you tap it, you'll see orders from Klondike characters. Complete orders to get coins, XP, and tools. Tools can be received as a reward for completing orders from Sir Chaney. He comes rarely; roughly every 6th order comes from him.
You can also delete any order if it seems to be very difficult to complete. To do so, tap the bucket icon next to the delivery button. A bit later a new order will appear.