There are a great number of genealogy websites out there. Some offer worldwide coverage, from birth marriage and deaths through census data to passenger lists and newspaper archives. Others focus on one subject or one region, with some focusing on a single town. Many are free and some are either subscription or pay as you go.
Most of these sites are free to search and to view the transcripts of the information. Some require a subscription (or link to a subscription site) to view the original record.