Sikhism was founded by Guru Nanak in 1469 followed by nine Guru’s with ultimate Guruship bestowed on Sri Guru Granth Sahib ji in 1708.
Since then Sri Guru Granth Sahib ji is revered by Sikhs as their living Guru and Sikhs take guidance from it for uplifting their character and way of living.
The core beliefs of Sikhism are that there is but One God and we are all His children and we are all equal in His eyes and we must remember Him in our deeds and before we do anything that affects others.