Your biggest source for initiation of your project is yourself and your blood family - both direct and extended. And don't underestimate the oral history and knowledge that has been passed-down over the years by family members - intentionally or otherwise!

So, firstly begin with yourself then work back in time through your direct blood ancestors and then your extended blood relatives.
Once you have written down everything you know about each individual, glean whatever information you can from old documents, letters, family bibles/journals, visits with family members, old wedding invitations, birth/marriage/death announcements, church or local history books, school yearbooks, old photographs, diaries, etc. Even old clothing and furniture that has been passed-down has a history and someone in the family probably knows something about the item in question who can provide other factual information through discussion of that item, and at least, background material for your ultimate family historical text.
Lastly, only upon your compilation of all this information you have been able to gather over many months, no matter how factual or fictitious it may seem, are you ready to start your real research and effort in determining your 'blood line history'! These, that follow, along with your own determination are the source references that will ascertain your success or failure in unfolding your project. Most importantly, keep in mind that you must be constantly evaluating all the data and sources you find and use, for their reliability. The old adage, "don't believe half of what you read and even less on what you hear" is so true in genealogy!! Try to confirm everything at least once via another source! Three main events that need especially to be verified are:
1. Birth records (christening)
2. Marriage and/or Divorce records
3. Death records (burials)

Recent events of these can be verified with Civil records. In Canada these records are under the control of the Provincial/ State Government and they begin at different dates depending when the province/state was formed. Earlier events which took place before civil registration began must be verified by using church records for these events (christening, marriages [by banns] and burials).

Remember, what you are recording for each subject is preparing a set of identifiers by which to uniquely identify each person in your genealogy. These unique BMD identifiers are the basis of genealogical research. Use the checklist of resources previously provided in this held program to assist you to expand your search strategies and options.