1. Click on the community member's profile (either by clicking directly on their name or image, or by going to the "Community Members" tab and finding the member you'd like to read).
The result is their profile showing up (for this example, let's use "Shad's Page" - he's got a great blog!).
2. Once you are on that page, there will be three links below the normal navigation bar (the normal navigation bar has "Home", "Invite Friends", "My Page", etc.)
The links you are looking for are "Page", "Friends", and "Blog".
3. If you click on "Blog", you will be presented with an index page of all blogs written by that community member.