To save your time, Toolbox 3/17 is a written version of ProjectZ that I wrote back in 2016.
The main sleight in this project is called Ukawa Retention Vanish. and it has so many subtleties that it took me 20 pages to explain the sleight itself.
I have gotten too many messages asking me how to not move fingers when executing Ukawa Retention, but I clearly talked about how to achieve no finger movements in ProjectZ. However, I believe it is better to learn such intricate sleights by reading rather than listening/watching since listening to someone talk about something can usually lead to missing a few crucial details.
If you do not own ProjectZ, you can either head to sansminds.com and get the video instruction OR get toolbox 3/17, which is an essential written version of Project here.
If you do own ProjectZ and still want to take a read of Toolbox, then you can email me at email@example.com with a picture of you holding ProjectZ, and I will give you a $10 discount on Toolbox 3/17.