The general idea behind the Keto diet is to eat fats and protein while strictly limiting carbs. This causes the body to go into a state called ketosis where the body has to use the fat stores for energy instead of sugars from our diet.
This article from the New York Times reviews a study that compared a low carb diet (keto) to a low fat diet. Low carb was the clear winner.
Here is a blog by Dr. Peter Attia explaining the process and also providing why keto might be something you want to try.
This article explains a bit more about the diet itself.
The social network Reddit also has a good number of user submitted resources for keto.
This google doc also provides a simple and easy to understand overview of the keto diet.
Joseph Arcita outlines keto in depth as well as providing a list of his own resources and nutrition facts for common foods.
For those using MyFitnessPal, here is a quick tutorial on how to set up MFP for keto. We will also work on uploading all our recipes to MFP so you can easily add them to your tracker.