If you take one thing from today it should be this... BACK UP. I mean it. All your photos, music, writing, uni work. All of it. Back it up peoples! Because if you, for example drop your laptop, you will lose it all. And a lot of it you can never get back! So back it up, please!
When you lose something you've worked really hard on it can be devastating. So back up frequently to ensure ALL you're work is saved.
This is all.