Views is an amazing module.
By default, the Drupal homepage shows a "Teaser" of each node (piece of content) that's been promoted to the front page. If there are more than 10 posts, it'll do you the favor of displaying a pager at the bottom. That's all it does, though. There's no filtering, only rudamentary ordering, and general lack of customization.
When the site came online, I used the Path module to give content a snazzy URL (in lieu of the Drupal default "nitkin.net/node/17"). All of the articles (the things in the frontpage use the URL format "nitkin.net/year/month/title"). I wanted the home page to filter using the same yyyy/mm scheme to allow granular browsing.
nitkin.net/2012 shows all posts from 2012
nitkin.net/2012/6 shows all posts from June 2012nitkin.net/2012/6/views displays this post
That's where Views comes in.