If you are on a tight budget and can't afford to pay hundreds of dollars for a high-end, full-featured editing application, you might want to consider downloading a free version of a popular video editor for YouTube. This way, you can learn how to do basic editing and, eventually, advance to more advanced processes without spending money. There are two great programs that are available for download: Adobe Premier and Adobe Elements. Each has its own strengths, limitations, and requirements, so you will have to decide which program is best for your editing needs.
Adobe Premiere is almost as close to a family name as you can get when it comes to editing apps. It is extremely powerful, but sometimes it is so feature-loaded that it can be overkill by some YouTube creators. If you are looking for a simple video editor for YouTube, then the new Adobe Premiere Rush might be a better choice. Although, if you want to edit videos for other platforms like Windows Mobile, Windows Phone, Android, iPhone, Blackberry, and iPod Touch, you will need a different program. This software is not compatible with these devices.
On the other hand, if you would like to edit long videos for other platforms, you will also be happier with Adobe Premier. The only con to this application is that it is a bit pricey. You can download it for free from Adobe's official website, but there are some downsides to this free download. The only negative I can think of in terms of this application is that it lacks in certain features that you might find very important to have for editing short films.