Hi! I'm a TV and film video editor, and I think you should look at Davinci resolve.
Professional video editing, color correction, visual effects and audio post production all in a single application. Free and paid versions for Mac, Windows and Linux.
www.blackmagicdesign.com
Its brilliant and completely free! May be overkill for what you need but doesn't matter if its free and if you get into editing then its very powerful too. Free tutorial videos on how to use it on their website, plus loads of people post videos about it on YouTube if you are stuck.