I've always admired bonsai trees but never had the pleasure of owning one. Knowing this, my brother decided to get me one as a gift. The thing is that I don't know what kind it is. It started off really well but now it seems dehydrated. I've followed the watering instructions but they don't state if this is an indoor or outdoor tree. I don't even know if I should use fertilizer and if so, can anyone recommend a kind or a brand? I've had it for about three weeks. Here are two pictures of when I first recieved it and how it looks now. I'm really bummed out because I'm afraid that she may be dying. Please help

Thank you in advance for your advice and responses.
[img]https://i832.photobucket.com/albums/zz246/kvnstrong/DSC00741.jpg[/img]
IMG]https://i832.photobucket.com/albums/zz246/kvnstrong/DSC00728.jpg[/IMG]