I also recommend Sony Vegas and I have even created a video tutorial on how to learn video editing in just 3 minutes http://www.youtube.com/watch?v=P5NDOKnXpsI .
if you want free, windows video maker and ulead is good. if you have money to spen cyberlink power director is great
I'm using Screenblast Movie Studio and it's doing the job good.. easy to use, small to install, and has some nice text and transition effects..
If you search for your video editing software you will found and able to download the same. After getting the software and If you are a video lover than I’m sure you would want to download HD YouTube videos. It’s the best feature that YouTube actually added a few years back. Uploading HD videos on YouTube is a great feature because it allows the viewers to view their favorite videos in an amazing quality.
I'd prefer using Sony Vegas, it's easy to use. Or you may try this video editor. I always use it to make and edit video for uploading to youtube. it's cool. And here is a guide regarding how to use it http://software.bigbigsoft.com/avs-video-remaker Hope it helps. Contact me if you have any other question.
Followings are the free Video Editing Software:- (1)Microsoft Movie Maker (2)Apple iMovie (3)Avid FreeDV (4)Wax
Use Adobe Preimere Pro, 4 or 5 whatever version supported on your machine and Google it for adjusting the video and ask me if you've any problems