Hey Mohamed... Ok, in this forum... at the top of the posts... is a post that says
Sticky: Free Webhosting - Getting Started
Click on that one and read it.. it will get you off to a good start.. basically you can use the site wizard -easy... templates -semi-easy... or start from scratch -experienced...note that the page ppl will go to when they visit your website is called index.html! have fun... trial and error is the way to go... i have been doing it for only 2 years and i am very professional already and im 14