Get People Picker Field Value

ClientContext clientContext = new ClientContext("url");

List listInstance = clientContext.Web.Lists.GetByTitle("list name");

ListItem item = listInstance .GetItemById(list id);

clientContext.Load(item);

FieldUserValue userValue = item["user type field internal name"] as FieldUserValue;            

clientContext.ExecuteQuery();

string username = userValue.LookupValue.ToSTring();

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source: https://social.technet.microsoft.com/Forums/Windows/en-US/3d367e58-91ec-4547-8e55-f1635eaec5bf/how-to-get-value-from-people-picker-field-using-c-in-sharepoint-2010?forum=sharepointdevelopmentprevious