Android can operate apps at the same time if you make sure to close a app it will stop running but hitting home let's it run in the background same with recieving a call

 

Yes that or simply hold down the home key and a window will pop up with all open and/or recent apps I find that the best and more sensible way.

 

Exactly the home key puts the app on the background but praying the back key usually closes the app

 

Try an app like, prehome or taskswitcher ....i can't live without it. Like having alt tab.

 

D/Loaded taskswitcher this AM and like it so far just need to get use to DBL clicking the home screen to get home,thanks for the recommendation n0ve.

 

Once you get used to it..overall productivity / responsiveness is so, much better. You can also switch setting to double tap to open tabs and leave home default.