Reviewers on VAK1969 note that Varma uses an accessible, sometimes anecdotal style that makes dense philosophical concepts like Maya (illusion) and Brahman (ultimate reality) easier to understand.
If you are looking for Shankara’s actual writings ( Bhashyas or commentaries), these are the standard texts often sought for study: 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 . Reviewers on VAK1969 note that Varma uses an