If you are looking for Shankara’s actual writings ( Bhashyas or commentaries), these are the standard texts often sought for study:
A foundational text where he explains the path to self-realization. High-quality PDFs are available via Internet Archive . shankarachari kniga skachat
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 . If you are looking for Shankara’s actual writings
You can find the full digital version (PDF/EPUB) of this book on Internet Archive . Essential Primary Works (Downloadable) shankarachari kniga skachat