Complex sentence: He started his studies in a school called "Sikssha sangha" in Bistupur but dropped formal studies before he passed from high school but for a period he studied Sanskrit in a "TOL" and learned sitar from a local maestro.
Split into simpler sentences: He started his studies in a school called "Sikssha sangha" in Bishnupur but dropped formal studies before he passed from high school. For sometime, he studied Sanskrit in a "Tol" and learned sitar from a local maestro.