Inspiration is all over the internet, I know from personal experience some people just start out with big ideas that they can't fulfill.
Nothing stops you from learning, of course, but the problem with starting your own website with very little knowledge is your vision. You have amazing ideas and amazing prospects, all the tools to do as you wish, but inevitably.. less knowledge than you need.
The fantastic thing is all about learning, though. I started off with Photoshop.. one day I was looking at my cellphone, thinking I needed a new skin for Winamp.. and it was just my inspiration, I took it a day at a time and it was frustrating for the most part, I ended up enlisting a fair amount of help.. but I learned from it and now, I can do it myself!
I guess my point is (paraphrasing works wonders!

) learn to walk before you can run