Can I add a WordPress blog as a "news" section to my existing website?

I have created a website and would like to create a "news" section on it. But I'm going to use this website with a friend that doesn't know html and I thought maybe it's easier to edit that news section with a content management system like WordPress. So I would like to integrate WordPress just for that "news" section like a blog entry so that my friend can edit or add new posts to this section in WordPress. I'm a total beginner in WordPress, so I'd like to get detailed help from you.

Thanks in advance.