Firstly, make sure you have the app on your phone installed already. In case you do not have it yet use the link here from their official site to download the app, and install it.
Follow the below steps to add a Model on Snapchat
- Swipe down anywhere on the Snapchat camera screen.
- Tap on the magnifying icon at left upper corner
- Type in the Snapchat username
- Tap on "+Add" right side next to the user
You can also view the video of how to add users by clicking here.
Follow the below steps view a story on Snapchat
- Swipe left anywhere on the Snapchat camera screen.
- You will see the stories posted on this page
You can also check out the official video on how to view a story by clicking here