Image from Wikipedia
An authoritative first place to start is Technorati. Defined in simple terms Technorati is a search engine for blogs. When you go to Technorati there is numerous ways to search for blogs. I would recommend the following searches for newcomers to Technorati:
Technorati Top 100 Blogs
This lists the top 100 blogs that have been listed with Technorati, by either their authority or the number of fans they have.
Authority within the realm of Technorati means the number of blogs linking to a website in the last six months. The higher the number, the more Technorati Authority the blog has.
Fans are the number of Technorati members that have added that blog to their favourites on Technorati.
You can scroll through this list and see if any blogs appeal to you. This search is good to use if you have broad interests or would like to keep up to date with the biggest blogs on the internet.
Technorati Blog Directory
This directory lists blogs under categories and sub categories. For example if you were interested in blogs on written by mums, you would find them listed under the category of Lifestyle and sub category of Parenting.
It is important to note that blogs must be “claimed” or listed on Technorati to be on the directories, so not all blogs that are on the internet are listed on this site. It does however have one of the most comprehensive blog directories that you will find on the internet, so it is a great place to start if you would like to find blogs to subscribe to.