I got it on my Xbox One.
You just need the cable (approx R300) and a real electric guitar (i got one of those cheapies you get at Cash Crusaders). If you got the cable+guitar then it will work with any version of the software (PC/Console etc).
Either way, Rocksmith is serious business, you will definitely get -real- training from this. It works pretty great and has a whole range of lessons/tutorials/training combined with playing full songs. Admittedly i do think a total newbie will take awhile before they can remotely play any of the songs in any serious capacity , you will most likely be stuck in the training modes (i.e. learning to pick, learning to strum, learning chords and the presses etc) for awhile.
I could already play relatively "ok" guitar (i.e. can strum most of the chords) , but i didn't play regularly at all . So when i got this game , my first problem was my fingers going numb and sore from the strings (softy fingers). So if you don't intend to keep this up and practice regularly, this "game" is going to be gathering dust.
GuitarHero/Rockstar in contrast comes with the plastic toy guitar without strings, so one can pick that up any time , even if you stopped playing for a month...but trust me you can't do this with Rocksmith.
On a total side note, you get some interesting Ipad/Iphone apps that does exactly the same thing as Rocksmith, except it uses the device mic to "listen" to your notes. I've done this with my piano, so the ipad app have this auto-scrolling music notes and even figure out whether you played the notes or not etc etc (and give you scores , turning it into game modes) . For guitar you get a few games to play with....also the fact that you get an app to tune your guitar says it all....
