Can't move app to SD card or take screen shot: must I root?

[joharry]

I have a Samsung Galaxy Victory 4G LTE and a 16GB SD card. Mr. Hildebrand's excellent editorial makes me think--as my only association with the word "rooting" is "avocado pit"--I am one of those who ought not to try rooting my phone.
However there are two things I want to do. I wonder if anyone can tell me how to do them without rooting.
(1) I want to store one large app--The Simpsons Tapped Out--on my SD card. I tried installing an app I thought would allow me to move the game app--
App 2 SD--but it only produced a list of apps that CAN be moved to my SD card: "TSTO" is on this list. I found in forums instructions purportedly for my phone, telling me I could move an app to the SD card by choosing the "move" button in Applications Manager. I have no such button. (I have Android version 4.1.2)
So: is there any way for me to move an app to my SD card without rooting my phone?
(2) I also read online that I can take a screenshot with my phone by pressing the power button and the down-volume button at the same time. This turns down my volume and then turns off my phone. No screen shot. Is there a way to take a screenshot with this phone without rooting?
I am willing to risk rooting if there is no other way. The game in question is the only one in my phone, the only one I play--and every time a game update comes in, now, I get a message saying the phone hasn't memory enough to load it. This is why I installed the (still blank) SD card.
Thank you for taking the time to read all this. I will be grateful for any advice you can give me.

 

[Saukrateaz]

The app may not be moveable to SD. Some apps can and some cant.
For the screen shot, its not really a press, more like a brief hold. You must press AND HOLD those buttons for a second or 2 for it to take the screenshot. Timing is kind of importanbt. If you hit 1 slightly before the other it will make that button function.

 

[joharry]

Thanks very much for trying to help me, Saukrateaz. Still no luck with the screenshot. I've tried half a dozen times, being careful to push the buttons simultaneously. Nothing happens for several seconds while I hold both buttons down; then the screen goes black and my phone shuts off.
As for moving this (or any) app: can you tell me how it is done (presuming the app in question is movable)? I've looked at everything I can think of in Settings, and all over Application Manager: I can't see any way to move anything to the SD card. (The one exception is my camera: when I most recently opened the camera function, I found a message asking me if I wanted to switch photo storage to my SD card.) Sorry to trouble. Again, thanks.

 

[lorenzo3988]

For a screenshot hold the power/home buttons simultaneously.