So if you notice a tree with fan shaped leaves, and plum shaped fruits which smell like dog feces it's probably a ginko. Only the female trees bear fruit, and they need to be in proximity to a male ginko to make the nuts. Ginkos are considered to be a "living fossil" because they have been thriving for tens of thousands of years in their current form.
A note of caution: Ginko seeds contain urushiol, which is the same chemical that causes poison oak, ivy and sumac to create an allergic reaction, and skin rash. Wear gloves and protect your skin when handling the fruit!
Step 1: Locate a Ginko Tree
Step 2: Prepare to go Ginko Picking
You will need a disposable plastic bag, or a bin to carry the fruit home in, a fruit picker, rubber gloves and perhaps chopsticks.