There are many sites which list various signs and symptoms of Asperger's Syndrome and it's been helpful to google and study as many as possible. I repeatedly read that because this is a spectrum, a person can have some but not all of the symptoms and it can be in varying degrees per person. I've also found that because AS runs in families, "you probably don't have to look far into the family tree to find AS."
Some symptoms listed By Mayo Clinic staff
Signs and symptoms of Asperger's syndrome include:
*Engaging in one-sided, long-winded conversations, without noticing if the listener is listening or trying to change the subject.
*Displaying unusual nonverbal communication, such as lack of eye contact, few facial expressions, or awkward body postures and gestures.
*Showing an intense obsession with one or two specific, narrow subjects, such as baseball statistics, train schedules, weather or snakes.
*Appearing not to understand, empathize with or be sensitive to others' feelings.
*Having a hard time "reading" other people or understanding humor.
*Speaking in a voice that is monotonous, rigid or unusually fast.
*Moving clumsily, with poor coordination.
*Having an odd posture or a rigid gait.