[UPDATE April 27, 2015: Blogger now support labels which helps to categorize posts within a single blog, but it is still very useful for me to maintain multiple blogs so that I may target each one for very different audiences. Within each blog, I am using labels to help further categorize the posts.]
Blogger doesn't have a feature to set up categories within a blog, but does allow for multiple blogs under one profile.
So I created two new blogs: MBA Notes from a Santa Clara University Alumni and LinkedIn Notes. After setting up the blogs, I realized that I like having multiple blogs better than just one blog with categories. I used basically the same template for each blog, but made subtle customized differences.