how client can know about wcf rest service method's endpoints

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WCF

REST

Hai All,
I am new to wcf rest services,

 public interface IRestService
    {
        [WebGet(UriTemplate="/Student",
            ResponseFormat=WebMessageFormat.Json
            )]
        [OperationContract]
        List<product> GetProducts();

        [WebInvoke(Method="GET",UriTemplate = "/GetStudent/{Id}", RequestFormat = WebMessageFormat.Json,
            ResponseFormat = WebMessageFormat.Json)]
        [OperationContract]
        List<product> GetData(string Id);

        [WebInvoke(Method = "POST", UriTemplate = "/Insert", RequestFormat = WebMessageFormat.Json,
            ResponseFormat = WebMessageFormat.Json
         )]
        [OperationContract]
        bool insert(Product Product);


        [OperationContract]
        [WebGet(UriTemplate = "/Add/{Number1}/{Number2}", RequestFormat = WebMessageFormat.Json,
        ResponseFormat = WebMessageFormat.Json
        )]
        int Add(string Number1, string Number2);

    }

public class RestService : IRestService
    {
        public List<product> GetProducts()
        {
            PractiseEntities db = new PractiseEntities();
           
            var students = from p in db.StudentEntities select p;
            List<product> st1 = students.ToList().ConvertAll(new Converter<studententity,>(TranslateStudentEntityToStudent1));

            return st1;

            

        }
        public List<product> GetData(string Id)
        {
            int id = Convert.ToInt32(Id);
            PractiseEntities db = new PractiseEntities();
            var stdnts = from p in db.StudentEntities
                         where p.ID == id
                         select p;
            List<product> st = stdnts.ToList().ConvertAll(new Converter<studententity,>(TranslateStudentEntityToStudent1));
            return st;
        }
        private Product TranslateStudentEntityToStudent1(StudentEntity student)
        {
            Product p = new Product();
            p.ProductID = student.ID;
            p.ProductName = student.Name;
            p.QuantityPerUnit = student.Adress;
            p.UnitPrice = student.DOB;
            return p;

        }
        public bool insert(Product product)
        {
            PractiseEntities db = new PractiseEntities();
            StudentEntity st = productToStudent(product);
            db.StudentEntities.AddObject(st);
            db.SaveChanges();
            return true;
        }
        private StudentEntity productToStudent(Product p)
        {
            StudentEntity s = new StudentEntity();
            s.ID = p.ProductID;
            s.Name = p.ProductName;
            s.Adress = p.QuantityPerUnit;
            s.DOB = p.UnitPrice;
            return s;
        }

       public int Add(string Number1, string Number2)
        {
            int num1=Convert.ToInt32(Number1);
            int num2 = Convert.ToInt32(Number2);
            return num1 + num2;
        }
    }

is this implementation/way is good one for wcf rest services,(or) is there another way

when I try to execute http://localhost:51425/RestService.svc/Insert I got error as method not allowed,how can I resolve this error and,how can I insert data using this,

how client can know about each methods endpoint,is there any other way to client can know about method's endpoint's

can anybody help me in this.