You can find the full digital version (PDF/EPUB) of this book on Internet Archive . Essential Primary Works (Downloadable)
The book serves as a comprehensive account of Shankara's life and his complex non-dualist philosophy. It covers his travels across India, his debates with other scholars, and the establishment of his monastic centers (Mathas). shankarachari kniga skachat
If you are looking for Shankara’s actual writings ( Bhashyas or commentaries), these are the standard texts often sought for study: You can find the full digital version (PDF/EPUB)
For deep academic study, the 20-volume set originally published in 1910 contains his major commentaries on the Upanishads and Brahma Sutras. These can be accessed through Hindu Ebooks . his debates with other scholars