The package contains:

~ The Extension Panel
~ Actions for Luminosity Masks

Includes the basic information for getting started using luminosity masks:
Luminosity Masks tutorial--PDF version
Action sets for creating the luminosity masks on the Layers and Channel panel
Information on how to load the action sets into Photoshop

~ Complete Catalog of all tutorials and actions (PDF)

This group contains PDF versions of all the tutorials plus all the Photoshop actions on this website, including the files to install and use the custom "TKActions" panels.
Includes the custom "TKActions" panel and "Instructions" PDF to play all the actions from a single pane to improve workflow efficiency (for CS5, CS6, CC, and CC 2014 only)
Luminosity Masks tutorial
Actions to create the luminosity masks on the Channels and Layers panels in Photoshop
Luminosity Painting tutorial with the Burn/Dodge action
Lumonisity Mask Triple Play and Advanced Masking tutorial
Photoshop actions to create the triple play with your images
Painted Masks tutorial
The Magic Mid-tones tutorial
Questions and Answers About Luminosity Masks
Hand-Blending High Dynamic Range (HDR) Images Using Luminosity Masks tutorial
Saturation Masking tutorial and Photoshop actions
Saturation Painting tutorial and Photoshop action
Make-It-Glow tutorial and Photoshop action
Cloning Color, Retaining Texture tutorial
Cloud Sharpening tutorial and Photoshop action
e-Framing for Soft-Proofing tutorial
Snowflake Avatars tutorial and Photoshop files

~ Videos from Sean Bagshaw—two video series that make using luminosity masks and the custom panel easier to understand.

The Complete Guide to Luminosity Masks:

Nearly 5 hours of video in 42 segments
MP4 format for compatibility with most video players
1280 x 800-pixel video size to enhance viewability
Sample images to allow users to work along with the videos
Topics range from the basic construction of luminosity masks to their artistic application with different adjustment layers.
Advanced techniques are demonstrated including exposure blending and the luminosity mask triple play.
The TK Panel