Once you have created a Samsung account and logged in, you can easily manage your account settings and preferences. From the Settings app on your Samsung device, navigate to the 'Accounts and Backup' section and select 'Accounts'. Choose your Samsung account from the list and you will be presented with various options to manage your account. You can update your personal information, change your password, manage connected devices, and review your account activity. Additionally, you can customize your account settings to control privacy options, notification preferences, and data synchronization settings. Managing your Samsung account allows you to have full control over your personal information and the services associated with your account.