The tutorial should be a PLA file or files.
This file contains all the library barts you need.
When you open the PLA you will be prompted to either "Read library from PLA file" or "Extract library to folder" or something very similar.
Just choose to read the library directly from the PLA.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11