Honestly, if you'd like to get to where you can make money off of your YouTube videos, you'd would want to invest in a Mac. iMovie, which is part of iLife, is included on all Macs when you buy them! With iMovie, you can even publish directly to YouTube!
Of course, Apple also offers Final Cut Pro which is like iMovie only for those who are serious about film making...above Final Cut Pro, is Final Cut Studio which includes Final Cut Pro and a lot more! Final Cut Pro alone will cost about $500 and Final Cut Studio is about $1,300. Trust me--it's worth it, if you're serious about making videos!