Hi guys just want to mention the obvious when you first start to learn guitar
Make sure you get your self an electronic tuner and learn how to use it or ask your tutor
There are loads of free APPS in the App Store where you can download them straight to your smart phone and this costs nothing
If you don't it doesn't matter how much you play and practice you will always sound
You gotta stay in tune folks !
So get yourselves one and learn to use it !
Once you've sorted this little important thing out
Don't leave it standing up against the radiator or on the bedroom floor put it away in a hard or soft case it will stay in tune longer .