I am reading the book "Nectar Of Devotion". In the chapter "Offences to be avoided" it is written that all devotees must worship Lord Ganesha. The same is written in Brahma-Samhita. Also it is written that Lord Ganesha worships the lotus feet of Lord Narsimhadeva. I dont know whether Lord Ganesha is worshipped at ISKCON. Then who should worship Lord Ganesha?