I found plenty of people in Renfrew, Renfrewshire, Scotland with the surname Algie. However, that does not mean that you are related to them nor does it prove that your family came from Scotland. When doing genealogy research, we do not start with the past and work forward. We always start with "the known" and work back. It is the only way you can provide true evidence of the family connections. You start with yourself and your parents and siblings. Then you do your parents' parents (your grandparents), then your great-grandparents, and so on.
Genealogy research is a series of steps that are repeated again and again. The first of which is to set a clear focused goal. This goal will include the name of the person you are researching, a time period, a location, and what you want to find (a birth date, marriage date, spouse's name, etc.). The second step is to decide which record would contain that information or which source to use. The third step is to figure out where the record you are looking for would be kept. Which repository can you find it in, i.e. the courthouse, the library, state archives, etc. Step number four is to search the location/source. Step number five is copy the information. If you haven't
done this before, make a photo copy of the information. After you learn what information is important you can transcribe, abstract, or extract the information instead of making a copy of the entire document. Step six is very important. Evaluate the information in the document. Look at each piece of recorded data as a clue, especially when using census records. You will usually discover more clues. Step seven is to use the results or your search to direct you to more records and more searches. Step eight is organizing the information you have found. You must place it into context with all of the other facts. You will reorganize as new information is discovered.
I have attached a copy of a Family Group Sheet and a Source Summary. The Family Group Sheet - each piece of information, concerning a family member, is placed on this sheet. The Source Summary - enables you to refer quickly to information you have found and the sources of that information. I have found both of these to be invaluable when doing research. I hope all of this is helpful and I wish you luck with your research.