There’s a link to the document in PDF format on the right.

A brief look at the contents:

Forward
Prerequisites
Future Compatibility
Updates and Revisions
How Experiments Work
A/B Experiments
Detailed Explanation of MVT Experiments
The Conversion Page
Setting Up Experiments
Background
Standard Experiments
Non-Standard Experiments (Testing Static Content)
Background
Setting up Multivariate Tests
Experiments with Dynamic Content
Background
Option 1 – Use a MVT experiment and custom JavaScript
Option 2 – Use an A/B experiment.
Advanced Stuff
Other Advanced Stuff
Segmenting traffic