If you own Assassin's Creed: Origins already, you can start the Discovery Tour from the game's main menu. If you own the standalone Discovery Tour, you can start it like any other application.
You'll be able to select a tour from the map of Egypt or from a list of tours sorted by topic. The map and the list can be accessed through the tabs Map and Tours in the Discovery Tour menu.
Starting a tour will transport you to the location on the map. After you finish the first tour, you'll be able to choose a character with which to complete the tours from the menu's Characters tab. Many different characters from the game will be available for you.
To experience a tour, simply follow the glowing golden line on the ground. Each station of a tour is marked by a sparkling spot along the line. At a station, an audio commentary will give you information as a tour guide in a museum would. You are free to look around or move, the commentary will continue. If you wish, you can get more information matching the audio commentary by pressing the key displayed on the screen.
The Passport tab in the Discovery Tour menu allows you to track your progress. More context is provided by the Timeline tab which gives you an overview of the time periods of ancient Egypt.
We hope you'll enjoy the Discovery Tour!
You can find more information on the Discovery Tour on the official website! If you have any questions, feel free to contact us.