It's mostly pictures and not much text, except for the initial popup you see which is the usual cookie consent prompt (left button = minimum required, right button = agree to all). But looks like British Museum also has this book if you want an English interface:

https://www.britishmuseum.org/collection/object/A_1973-0723-...

If you are asking about the text written on the pages themselves, it takes a bit more effort unless you are familiar with archaic script. I can make out some of them as guidelines on how to draw the patterns.