Alternative contact details, like your mobile number, are also a good idea.
Open Your Profile
Press the (1) settings button next to your company name and choose (2) “User Settings”.
Edit Basic Information
Enter your basic information (1). Choose an Avatar by clicking the “select file” button (2) and confirm your updates with the green “Update Profile” button at the bottom.
View Profile Information
Follow this link to learn how to access a user's profile information.