If you've tried the new Safari toolbar and you're not a fan, you don't have to stick with it. Go to Settings > Apps > Safari.

To delete apps on your Fire Stick, go to Settings > Applications > Manage Installed Applications. Select an app and choose Uninstall. To sideload apps on your Fire Stick, go to Settings and turn on ...

To switch off call screening, open the Settings app and head to Apps > Phone. Scroll down to the Screen Unknown Callers ...