IPhone Video

There are a whole bumch of free video editing softwares on the Google machine.

I used one if them a couple of years ago to cut up one of my sons fights.

Easy to use.

We have a very sexy video from a party we attended. All participants were told about the video and agreed to be filmed. The video is nearly an hour long and I would like to make four 15 minute videos out of it. Any suggestions for someone not too technically adept? Thank you in advance.