shloka

 https://www.google.com/search?q=Rishi+shloka

Gotra

https://en.wikipedia.org/wiki/Gotra
https://www.youtube.com/results?search_query=Gotra

https://www.google.com/search?q=Gotra+Genesis
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Gotra

Legend

 https://www.google.com/search?q=Rishis+Legend