Just out of curiousity, how old are you?
FCP has a pretty difficult learning curve. Plus, learning how to edit doesn't mean you'll be able to make masterpieces. Editing is just one of the parts. Since you seem to be new at this, I'd recommend you take a class or two about video production. See if one of your local colleges has a video production department, and try to take a class in videography so you can learn the basics of shot composition, camera operation, lighting, etc. and a class on video editing so you can learn about editing. There's way more to this than just taking a camera and pointing it at things, then taking the clips and cutting them together.
Remember, a great filmmaker can take a piece of crap camera that you buy for $100 and make a better movie than a noob who buys a camera that costs $1200 like the hv20 or $5000+ like an XLH1 or something.
Also, remember that if you're serious about filmmaking, you can't just buy the camera. You need a tripod, lenses, microphones and other audio accessories, lighting, extra batteries, tapes, and the editing software which is $1300 alone. Even if you get the HV20 to make films, you'll be spending $1200 (camera) + ~$400+ (accessories) + $1300 (fcs) so you're up to 3 grand.