Norwegian genealogy

I am in search of my great grandfather's history. I seem to have some information that was put together by family here in the States. I'm not sure how accurate it is. But if someone could help me out I would greatly appreciate it. His name was Bennett S Anderson or Berendt S Andreason, born Oasen, Norway December 28, 1868; came to the USA in 1888 from Norway and in April arrived in New York, having sailed in an American ship. The rest of the info I have is what he did once he was here. So I assume that is not helpful. Please let me know if anyone out there can steer me in the right direction. I've neer tried to search for this type of info before. Thanks.