The command loopcut does not work i need it to do the subway tutorial but i click Ctrl-R and the text is as normal select a ring etc but i dont understand how you do this, on the video pink lines come up but when i do it nothing happens, Ive looked up diffrent ways to do it and nothing works if anyone could give me an answer to my problem it would be greatly appreciated Thankyou for your time.
Try practising the loop-cut command on a simple object, like the default cube. You can get a feel for how it works there.
I had that same problem at first and then realized that I was still in the object mode, not the edit mode. You can tell the difference because when in the edit mode, the object will be a wire outline and in the object mode, it will appear solid.