Hey guys, it's been a while!

I have problem and was wondering if you guys could help. I have a .wmv file that is about 43 hours long but I need to edit this into a "highlights" video and have no idea what video editing software to use! The software will need to mirror the video (as it's recorded mirrored for some reason and I need it the right way), cut, paste edit the video file in general and add text to the video. So can anyone help with what I can use?? The software should preferably be free but that isn't a necessity once it can handle 43 hours of footage and is easy to use/ doesn't have a steep learning curve as I have only ever used windows movie maker!

Cheers guys and thanks in advance,
J.