Complex sentence: He studied music privately with his father before going to Gustav Neuhaus' Elizawetgrad School of Music from 1892, and from 1901, the State Conservatory in Warsaw, of which he was later director from 1926, until retiring in 1930.
Split into simpler sentences: He studied music privately with his father before going to Gustav Neuhaus' Elizavetgrad School of Music from 1892. From 1901 he attended the State Conservatory in Warsaw, of which he was later director from 1926 until retiring in 1930.