Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Aspiring to create documentaries asking for advice about edition software › Take a look at Sony’s Movi
Take a look at Sony’s Movie Studio HD Platinum. It’s easy to work with and has a relatively flat learning curve. Sony has an excellent users forum on which you can post questions and get answers almost immediately. (Google “Sony Users Forums) One big advantage to this is that as you become more proficient in your use of Movie Studio you can move up to Sony Vegas Pro without having to relearn everything.
The Corel product you refer to is good but more limited than Movie Studio. I’m not a fan of CyberLink tools and personally would stay away from them, but that’s just a matter of personal taste. I haven’t actually worked with Power Director, only their DVD player.
Programs such as Adobe’s Suite and Sony Vegas are expensive, have a very steep learning curve, and probably have a great many more features that you’re going to need for some time to come.