If you're scared to take things apart, if you think you won't be able to put them back together again or whatever, it's alright, just take lots of pictures with your phone while you're taking the thing apart. Video is even better.
If the thing you're taking apart was designed by people who put some thought and effort into it, you won't need the pictures because you'll find it's not physically possible to put it back together wrong. Those are good machines. But do take lots of pictures anyway because there aren't all that many good machines in this world