You know nothing.....race based? Are you a moron. Sikhism was partially born out of the bloody conflicts between Hindus, Muslims and the different castes that exit. The founder of Sikhism pursued the idea of equality it is absolutely not a race based religion.
The holy book was a collection of 10 gurus teachings each expanding upon each other, it includes passages from Muslim and Hindu leaders as well. I see this as a good thing personally, other religions have their holy scriptures modified through history and a lot cannot be traced back to an absolute origin point. This is not the case with Sikhism, all the teachings from all the gurus have been set in stone that sets a great foundation.