var query = from str in stringArray
            group str by str[0] into stringGroup
            orderby stringGroup.Key
            select stringGroup;

var number = 5;
var name = "Virginia";
var query = from str in stringArray
            where str[0] == 'm'
            select str;

var cust = new Customer { Name = "Mike", Phone = "555-1212" };

var newLargeOrderCustomers = from o in IncomingOrders
                            where o.OrderSize > 5
                            select new Customer { Name = o.Name, Phone = o.Phone };

var newLargeOrderCustomers = IncomingOrders.Where(x => x.OrderSize > 5).Select(y => new Customer { Name = y.Name, Phone = y.Phone });

select new {name = cust.Name, phone = cust.Phone};