Need help with program

iv been stuck with this program for a few days, my teacher doesn't really teach us code but expects us to now it so.
i have another version of this program without the text graphics and no help screen
the main problem for me is to do the if statements for when they press A or B
also im not sure if im doing the design in console.writeline right
so if u guys can tell me the problems and how to fix them

its also better if u looked at the attached file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        public static void Main(string[] args)
        {
            string studentname, choice = "empty";
            int Input = 0, number1, number2, answer, name;
            Random ran = new Random();
            for (int i = 1; i <= 10; i++)
              
            Console.WriteLine("++++++++Welcome to Alans Maths game++++++++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++        Please Enter you Name        +++");             
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("++++++++++++++     MATHS      +++++++++++++");
            studentname = Console.ReadLine();
            Console.Clear();

            Console.WriteLine("++++++++Welcome to Alans Maths game++++++++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++     A) Start          B)/>/> Help       +++");             
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("+++                                     +++");
            Console.WriteLine(            "Hello {0}!", studentname        );
            Console.WriteLine("+++                                     +++");
            Console.WriteLine("++++++++++++++     MATHS      +++++++++++++");
            choice = Console.ReadLine();
            Console.Clear();
            if (choice == "b")
            {
                Console.WriteLine("++++++++        Welcome to Alans Maths game                        ++++++++");
                Console.WriteLine("+++                                                                     +++");
                Console.WriteLine("+++                  HELP SCREEN                                        +++");
                Console.WriteLine("+++                                                                     +++");
                Console.WriteLine("+++ 1. A question will be shown which you will answer                   +++");
                Console.WriteLine("+++ 2. If incorrect you will have to retype the correct answer again    +++");
                Console.WriteLine("+++ 3. Once correct answer has been typed in you will be given another question+++");
            Console.WriteLine("+++ 4. To exit press the x icon on the top right corner                      +++");
                Console.WriteLine("+++                                                                      +++");
                Console.WriteLine("+++                       Press Enter to continue to the Game           +++");
             Console.WriteLine("+++                                                                        +++");
                Console.WriteLine(                             "{0}!", studentname                             );
                Console.WriteLine("+++                                                                     +++");
                Console.WriteLine("++++++++++++++                         MATHS                  +++++++++++++");
                Console.ReadKey();
                Console.Clear();
            }
            if (choice == "a")
            } break;
    }
}
{
        number1 = ran.Next(0, 10);
        number2 = ran.Next(0, 10);
        answer = number1 * number2;
        Console.Write("what is {0} times {1}?: ", number1, number2);
        Input = int.Parse(Console.ReadLine());
        int rand = ran.Next(1, 5);
        while (Input != answer)
    {
        switch (rand)
    {
        case 1:
    {
        Console.WriteLine("No. Please try again");
    } break;
                        case 2:
                            {
                                Console.WriteLine("Wrong. Try once more");
                                } break;
                            case 3:
                                {
                                    Console.WriteLine("Dont give up!");
                                } break;
                            case 4:
                                {
                                    Console.WriteLine("No Keep trying");
                                } break;
                        }

                        Console.Write("what is {0} times {1}?: ", number1, number2);
                        Input = int.Parse(Console.ReadLine());

                        rand = ran.Next(1, 5); // for a new number incase the answer is wrong
                    }
        if (Input == answer)
        {
            switch (rand)
            {
                            case 1:
                                {
                                    Console.WriteLine("Very good");
                                } break;
                            case 2:
                                {
                                    Console.WriteLine("Excellent!");
                                } break;
                            case 3:
                                {
                                    Console.WriteLine("Nice Work!");
                                } break;
                            case 4:
                                {
                                    Console.WriteLine("Keep up the good work!");
                                    break;
                                }
                        }
                    }
                }
            }
        }
    }
}