Where is the sleep wake button on iPhone 6

I just got this phone (6) yesterday. The person that rang me up, went ahead and put the case on for me that I picked out. I didn't get a chance to mess around with it before she put it on. Actually, I have no clue what a 6 feels like in my hand or back pocket. I'd rather have my phone bare/without a case on it because I think it's easier to deal with. For example putting in my back pocket just slides right in, fits better in my wallet (it's a wrist wallet or whatever they're called, meaning I don't need a purse if I don't need to carry that much). Anywho, I'm getting way off track, which I do way too much. Anywho, when she put the case on, it took a good bit to put on. It's tough getting it on and off. After watching her cleaning the screens, making sure there's no smudges or anything, and then jar alone putting it on names me not want to go through all that right now see if I'm supposed to have a button on top of my phone. Long story short or pretty much now that you just read a bunch of unnecessary info let me get to the point. For some reason I thought there was 2 other buttons besides the 2 commune buttons on the left side. I thought there was one on top and on the bottom. I don't know if under this case there's a button on top, but this case doesn't have a little spot on top letting me know that there's a button here to push. There's the volume on the left and the right side is the power button, I think it's the power. All the buttons on this phone/case, right and left, that I'm able to push are pretty hard to push, like b4 I push 1 of them I have to pretty much get one of my hands situated, pretty much I mean get a good grip with one hand and push the button with the order hand. I'm can't imagine it being the phone that is hard to push, I'm sure it's the case,i probably just have to break it in. So my question is does the iPhone 6 only have the 2 commune buttons and the other right side button and is that called the sleep /wake button and the power button. In was trying to take a screen shot by holding the home button and slide button like the other phones would do but I can't get this one to do it. When I looked it up it said I should be hitting the home and sleep/wake button so that's why I'm so interested in knowing what button is called what and do I have the wrong car and have another button somewhere on the top or did I buy a bad phone at the store and I can't take screen shot pics. That Lat sentence was a sorry ling ongoing sentence. Okay dokey

Thanx to whoever read this from top to bottom, if you did you really have awesome patients. I get way way off track literally with every message I tore up. Have a good day.

P.S. Now after I spent all this time on this ridiculously long question, let's hope I can figure out how to send it. This is my first time in this new Apple support thing's like I literally just made my new user name. Ahhh ( I do P'Sma's w/ my 2 lil boys all the time messing around, but I believe I did it to this simple little question that wad supposed to be so short and fast l and now I'm p.s'ing and explaining why I'm p.s.'ing)