Just got my new Phantom 2 Vision Plus, and I am curious as to what the best movie editing program would be for beginners new to filming.  I am just trying to get some easy video cropping, slow-motion capture, and music added to my short videos I've taken.  Any suggestions are welcome, Thanks!

GoPro Studio works. Its free and easy to use.

I started using Sony Vegas because I found a copy cheap on Amazon.
It's pretty complex until you get used to it, but it has most of the bells and whistles you'll ever want even in the older versions.
I've heard (but not tried) that Moviemaker (free) is pretty good to start with.

I was thinking about that.  Awesome, thanks I will try it out.

I tried sony vegas, ough....

But adobe premiere cs6 is brilliant.. maybe 1h with tutorials on youtube and you are good to go. Dont forget adjustment layer, that is badass.

Stupid microsoft movie maker wont work on my dell, so installing go pro studio now ....ive seen a  lot of people mentioning premiere

I've heard good things about GoPro Studio too...

I use Final Cut Pro X, but it isn't exactly cheap. GoPro studio is probably as good as it gets for free. I use it to remove fisheye before importing into FCPX. It's a different operating system than FCP, so I don;t need to spend too much time learning it, but there are some good tutorials. Lynda.com has a good one on GoPro Studio.

Go Pro Studio wont allow me to trim ...

says its only for GoPro Source clips.  lame

Well, look at it this way, you got what you paid for!    Ok, seriously, try iMovie. If you want a free or cheap app/program. I thought you were using a GoPro on a P2.

Adobe Premier Pro and Final Cut Pro X are going to give you a wider range of options, but, they are expensive. If you have plopped down the money for a Phantom, then, I'm guessing this isn't just some cheap hobby or pastime? You might look into them if you want to produce some quality videos where you get into color correction, exposure, contrast, audio correction etc, and other effects.

Start with a free or cheap app/program and then check out some of Adobe's options.

Honestly, the iMovie app does 90% of what needs to be done to a video to make it watchable.

Good luck.

Adobe premiere cs6 have a 14day trial.
And of course for the less fortunate, downloading, nothing i recommend, but i hear that some people do it.

I'll probably check out adobe premier.  I was trying to go the free route because i'm not really looking to do a lot more than trim, combine a few clips, do slow-motion, and add music for some 30 second shorts.  But it looks like that premiere might be the best choice

Sony Vegas will be good for your needs.
And royalty free music special for videos you can find here: https://www.youtube.com/c/RoyaltyFreeMusicNoCopyrightMusic

Best and new background music sorted by genre, mood and etc.
Free download!

I use Adobe Premiere Pro professionally, but it's not free. Costs like 10 € a month. But maybe Premiere Elements could suit you better, if they still support it.

You could try the free DaVinci Resolve version. It's not easy to use at first, though.

Otherwise, you could try Pinnacle or some other cheapo home editor.

Can't really recommend Sony Vegas, nor GoPro Studio, which they don't support anymore (it's something else now).

Sony Vegas 14 Pro 64 bits for me ,  support 4 k