When I started doing genealogy, there wasn't much information online, since the internet was brand new. Researchers were just beginning to use computers to document families, and later we could purchase research records on CDs. Beyond that, most research had to be done in person, in libraries and archives, from books or microfilm.
It is still important to visit archives, but there is so much available online, if you know where to look. This is especially true in the beginning stages of research.
While I was documenting much of my family's history, I was busy with a career in information technology. After I retired early, I focused on genealogy full time. I am currently working as a Volunteer Genealogist with the DAR, helping prospective members discover their connections to patriot ancestors.
My family tree has ancestors documented into the 1700's, with many undocumented clues to be researched further, as time allows. You can read more about my family, stories and discoveries from my research through my blog, Deep American Roots.