1) Every bots are created using the @BotFather. 2) If you want to make your bot works, you need to have Programming knowledge. Java, JavaScript, Python, C# are main but you can also use C++ for that purposes. 3) You need server to execute your codes so you may use your computer as a server and open it 24/7. Or you may use Raspberry or, buy a server from telegram. 4) If you don't have any Programming skill, you should simply use @livegrambot and other free bots. For more info @TelegramBotTalks