I have to update this a tad since I have switched to self-hosted WordPress.  I use Thesis theme and it includes all of the bottom with no extra coding involved! This is a great reason to switch if you are considering it.

Blogger info:

Adding Meta Tags to Blogger
Favicon Generator
How to add a Favicon to Blogger and Free Hosting
Adding Different Meta Tags to Each Blogger Page
Adding Alt text to Blogger Pictures
How to change your font in Blogger