Blog design question

I usually make long posts in my blog, so if the whole post appears on the blog home page, the page will get too long after a while (as it is now). Do you know how I can make only the summary of each post appear in the home page (like in some blogs)?

P.S. I use Wordpress for my blog.

 

In your main index template file, replace the_content() with the_excerpt().

 

Thanks, I'll try that.