Complex sentence: Thereafter she graduated in English literature from Jesus and Mary College, Delhi University, and did her post graduation in History and also did a PG diploma in Journalism from Indian Institute of Mass Communication (IIMC), New Delhi.
Split into simpler sentences: Thereafter she graduated in English literature from Jesus and Mary College, Delhi University, and did her post graduation in History. Later she did a PG diploma in Journalism from Indian Institute of Mass Communication (IIMC), New Delhi.