Jow can I clean up my Android tablet?

[Geek-9pm]

It is an early version of the Amazon Fire. It runs under  the Amazon variant of Android.
But Amazon calls it O 5, Whatever that means.
Anyway,I don't use it much. So I don't know how to clean up the junk they have on it. I got it for my wmy wife, She is not going to be able to use it until the number if items on the screen only reflects things she wants. Most of the stuff is so pointless and just clutters up things. Of the 12 icons on the home screen, only three are meaningful. The rest are some things only a child could like.
Any help would be welcome. Please.

[DaveLembke]

Under settings you should have ability to remove programs. I am running Android 4.3 and my phone with 2.5 x 3.5 inch screen was cluttered with all the bloatware that came with it. I removed a bunch of stuff to free up storage, and the desktop area. Of the 4GB storage I was able to free up about 400MB, and then add 3 games there were like 30MB each. I am guessing tablet should be the same as the phone.