The Alzheimer’s Society of Windsor-Essex County created an informative video that lists the top ten warning signs of Alzheimer’s disease, along with three concrete, real-life examples for each of the ten warning signs. The warning signs are as follows:

Memory loss that affects daily living
Difficulty doing familiar tasks
Problems with language
Disorientation in time and space
Impaired judgment
Problems with abstract thinking
Misplacing things
Changes in mood and behavior
Changes in personality
Loss of initiative
The entire video can be viewed here: https://www.youtube.com/watch?v=9CBR832QX5U

A PDF that discusses the 10 warning signs is also available:

http://www.alzheimer.ca/windsoressex/~/media/Files/national/AW2015/10WarningSigns_colou