Dear Robert, I suggest that you go to your library and get some basic books about genealogy. As a generality, I think the following sources are among the best 1.county archives 2.local history libraries of the area your ancestor lived in. 3. census data.
I have found the Ontario on-line resources to be very useful--the 1871 census and the Ontario Cemetery Finding Aid to name a couple of the best.
The local genealogy society can be very helpful.For a modest fee they might research their area's records.