Now that your BSD Google account is now properly setup on the iOS device, you COULD use the built-in Mail app to access your BSD Gmail. However, the built-in Mail app doesn't do a great job with a number of Gmail's unique features like Labels and Stars. That's why it's recommended to to ignore the built-in Mail app and, instead, use the official Gmail app (which can be downloaded for free from the App Store).
1. if it's not already installed on the iOS device, install the free Gmail app from the App Store
2. Enter your BSD Google email address in the "Username" field and your password in the "Password" field and tap "Sign in"
3. Gmail options and features are arranged at the top
4. When you access the Labels, they appear on the left. Tap a Label or your Inbox to hide the list
If you prefer not to receive multiple notifications and sounds when you receive a new email message, move on to Step 3, Configure the appropriate settings for email notifications