Step 1: Set up Your Telegram Bot
Chat with Botfather to create your bot
On Telegram search @BotFather or you can start conversation by navigating through following link https://telegram.me/BotFather
Step 2: /start
Start conversation with the botfather by typing /start the botfather replies you with set of commands that you can use with your bot.
Step 3: Choose a username to your bot
Now type /. The bot father will ask you to choose a name for your bot.
Enter the desired name you want, for example I have named as your bot name
On next step the bot father will ask you to choose a username for your bot, the bot name must end with bot for example I gave yourbotname_bot