windows 8.1

Hello,
I am very, very new to the kodi world. My friend has kodi on his computer and we would always watch movies on it and so on.. When I went to try to download kodi on my computer it is not letting me. I think its because I have windows 8.1. So can anyone tell me how to download kodi for an hp laptop with windows 8.1. I really do not want to ruin my computer and that’s what I am afraid of.

Thanks in advance,
Hillary