To create a new user in Salesforce, follow these steps:

1. Access Setup:
- In the Salesforce app, click the Gear icon (Setup) in the upper-right corner.

2. Find Users:
- In the Quick Find box, enter "Users" and select Users.

3. Create New User:
- Click the New User button.

4. Enter User Details:
- Full Name: Enter the user's full name.
- Email: Enter the user's email address. This will typically be their username.
- Username: (Optional) If you want a different username, enter it here.
- License: Select the appropriate license for the user. This determines their access level and features.
- Profile: Select the profile that defines the user's permissions.
- Role: (Optional) Assign a role to the user if applicable. Roles can be used to group users with similar responsibilities.
- Password: You can either generate a temporary password or let the user set their own password.
- Other Settings: Configure other settings as needed, such as language, time zone, and email preferences.

5. Save the User:
- Click Save.

Additional Tips:

- To add multiple users at once, you can import them from a CSV file.
- Consider using permission sets to further customize user access.
- Regularly review and update user information to ensure accuracy and security.

By following these steps, you can successfully create new users in Salesforce and grant them the appropriate access levels.