Summary Problem when Posting

Hi,
I hope someone helps me.

When i post in WordPress i just want the first few lines of my article to appear on the main page. And to people to click and discover the full article in the more detailed page.

I am only able to make a normal post but when i click on the title of the post it just shows NOT FOUND and a search bar.

What could be the problem ?

I am on a Linux server hosted by GoDaddy.

I really hope someone will help.

Thanks in advance.

Cheers,

Mili