@Rocky_Balboa memorise balyan notes. Facts and dates, historian names, small maps are imp. in history. balyan notes plus ncert are enough for minimum score of 250. for. 290+ score supplement balyan notes by additional books like upinder, satish chandra, spectrum modern history, books for world history etc.
Try to limit your sources.
Read only that stuff which can be written in exam in 3 hours. Nothing else matters!!
