The library contains a repository which acts as the data source for the projects. The repository has 3 methods: FindAll, Find and Save, which should be enough to enable you to complete the web...

public static class PersonRespository
    {
        private static List<Person> _InternalStorage { get; set; }

        static PersonRespository ()
        {
            _InternalStorage = new List<Person>();
            Save(new Person(){FirstName = "Sherlock", LastName = "Holmes", Gender = Gender.Male, Title = Title.Mr});
            Save(new Person() { FirstName = "John", LastName = "Watson", Gender = Gender.Male, Title = Title.Dr });
            Save(new Person() { FirstName = "James", LastName = "Moriati", Gender = Gender.Male, Title = Title.Professor });
            Save(new Person() { FirstName = "Irene", LastName = "Adler", Gender = Gender.Female, Title = Title.Miss });
        }

        public static Person[] FindAll()
        {
            return _InternalStorage.ToArray();
        }

        public static int Save (Person person)
        {
            if (person.Id == 0)
            {
                if (_InternalStorage.Count > 0)
                    person.Id = _InternalStorage.Max(p => p.Id) + 1;
                else
                    person.Id = 1;
            }
            else
            {
                _InternalStorage.RemoveAll(p => p.Id == person.Id);
            }
            _InternalStorage.Add(person);
            return person.Id;
        }

        public static Person Find (int personId)
        {
            return _InternalStorage.FirstOrDefault(p => p.Id == personId);
        }
    }