This is not a family that I am researching but I can tell you where to find the information you are looking for.Nova Scotia Vital Stats are online at
Its a free and searchable site operated by the Provincial Archives.You will need to download a viewer program to see the actual record but that is free onsite and is very easy to install.
You didn't provide enough information for anyone to help you much but when I searched the "Tracey" marriages at the above site I found a Joseph Tracey who married a Margaret Turnbull so you can probably find out a lot from there. The Marriage Registration will provide age, occupation, parents names etc.
The 1901 and 1911 Canadian Census can be found at www.automatedgenealogy.com The above Joseph is in the 1911 Census (Cape Breton Co South, district 11, Lingan-Victoria Mines poll District) as follows: John Tracey, head, age 36 Flora Tracey, wife, age 35 Joseph Tracey, son, age 13 William Tracey, son age 12 Clara Tracey, dau. age 10 Flora Tracey, dau, age 8 Martin Tracey, son, age 6 John Tracey, son, age 1
The above two sites should get you started on your family research