[header] How to contact old friends [title] Use social media. [step] Just about everyone is on social media these days. You can likely use tools like facebook or instagram to find the old friend you are looking for. 
Typing their name into the search area of the social media site may bring up their name and give you a way to get in touch with them. [substeps] Some people make themselves private on social media, meaning that the general public can't view their profiles.