CubeRoot book/ resource?

[Dex]

I stumbled upon these two pages on the CubeRoot website:

Preface - CubeRoot

Last Update：2019/11/21

www.cuberoot.me

Contents - CubeRoot

Last Update：2019/11/16

www.cuberoot.me

Is there a book or resources that these contents are in? It seems very comprehensive and helpful

 

[ruffleduck]

Seems like an abandoned project. I could be wrong.

 

[Dex]

It says the ones that are purple are on the way though, suggesting the other parts are done

 

[qwr]

You can ask @CubeRoot

 

[Dex]

You can ask @CubeRoot

I already sent them a pm

 

[Dex]

I already sent them a pm

Not sure if they're active

 

[CubeRoot]

no book atm