Task: Go to the Central Park Trail, tap on the share option, select photos, and share the hike by message.
Steps:
Click on the Share option 
Click on the third picture below the All Trails option on the left side of the screen
Click on the third picture below the All Trails option on the left side of the screen
Click on the Next option at the bottom of the screen
Click on the Next option at the bottom of the screen
Click on the Messages option at the Bottom left corner of the screen
Click on New message