Why does my iPod close out of programs and I don't even press the home button?

It is because the app is crashing. To fix it temporarily you need to -

Double press the homebutton (fast.)

A pannel will slide up from the bottom of the screen.

Press and hold on an app, they will riggle and a red circle will come up in the left corner of each app.

Press the red circle for the app that crashes, this will not delete the app!

This will solve the problem for a bit but repeat the process every time this happens.

Hope I helped!

:-)