Asset Problem – Tracing Alphabet

Hi,
I just purchased the English Tracing Book from your website.
I opened the zip file, which afterwards is a folder named English Tracing Book v.1.0 – inside the folder I find 810 folders with numeric names like “0ff304632e584e849871d0670da43f8a”and I don’t know, where what is located or how I can use the project in Unity. Can you help me or maybe send me a version, where everything is named and a manual is packed with it?
I also send you a foto of the content of the folder at the info-mail so you may understand my problem better. 🙂
Thank you
kind regards
Jay