Hi Terry, welcome to the Android Family!
It sounds like you have the "TalkBack" function active on your phone. Try checking Settings, Accessibility Options to disable it. IF turning it off doesn't work, then you might have the "TalkBack" bug. What is this, you ask? Unfortunately there's a bug with TouchWiz (the stock Samsung launcher) that causes TalkBack to, well, talk back, whenever you install an app that uses the Accessibility functions of the phone (for instance, NoLED, LightFlow when you want it to configure notifications for certain apps, etc.) In some cases, the bug only turns TalkBack on but you can turn it off. In some other cases, no matter which setting you have, TalkBack won't shut up.
In case it won't disable with the options, you have three possible roads to follow:
1) Deactivate all accessibility options for apps that are accessing them (in Settings, Accessibility Options... just untick all apps that are there).
2) Switch Launchers. This is a TouchWiz-specific bug, so using a different launcher (like GoLauncher or Nova) should clear the issue and allow you to use all other apps. The downside? You lose TouchWiz-specific widgets.
3) "Freeze" TalkBack. You can go into Settings, App Manager, All tab, and find the TalkBack service. In there, you can select to Disable the app. It won't uninstall it, but it will prevent the app from functioning, effectively shutting your phone up.