Prabodhasudhakara is one of the lesser-known works of Sri Sankaracharya. One distinguishing feature of this work is that it recognises the paths of knowledge (jnana) and devotion (bhakti) as equally valid and expressly declares the oneness of Brahman with and without attributes.
Course on Hinduism by Karanam Aravinda Rao
Gita regimen for Advaitic Living by Prof. V Krishnamurthy
Taittiriya Upanishad by Dr.Karnam Aravinda Rao
Prabodhasudhakara (Kannada) by V Subrahmanian
Ch4 Panchadashi (Kannada) by V Subrahmanian