You probably use the same apps over and over on your Samsung Galaxy tablet. You can easily access that list of recent and currently running apps by pressing and holding down the Home key. When you do, you see a pop-up list of apps most recently accessed.
To reopen an app, choose it from the list. The app takes over the screen, in most cases picking up right where you left off.
Apps on your Galaxy Note or Galaxy Tab tablet do not quit. They keep running, so using the recent apps list is a great way to switch between running apps.
Don't fret that apps don't quit when you close them. Some apps do feature a Quit or Sign Off command. Even when they don't, the Android operating system shuts down apps you haven't used in a while or which are taking up too much memory. That process takes place automatically and no information is ever lost.
You can quit a program by using Task Manager. Touch the Task Manager button. You'll see a list of running apps. Touch the End button by an app to shut it down.
For the programs you use all the time, consider creating shortcuts on the Home screen.