What book is this? Is it collectible?

The name of the book is Supplementary Calendar Manual-as you can see in the second photo, as shown in the red box below:

Supplementary Calendar Notes, edited by Wei Mingyuan in the early Qing Dynasty. The contents of this book cover a wide range, including calendar, fighting the river head, good fortune, mission essence, funeral choice, magical power of Taoism, bird escape, evil spirits in the year and month, mysterious five elements, Yin and Yang houses, auspicious days in one year, daily taboos, exorcism, public rules of the previous dynasty, taboos of various matters, creation of repair prescriptions, sacrifice of ghosts and gods, funeral preparations and so on. Together with Aotou Shu Tong and Xieji Frontier Defense Book, it is three classic works of auspicious choice.

I hope I can help you.