Below are detailed instruction on enabling Two-Factor Authentication and generating API keys. However, if you're more comfortable with watching videos to carry out the tasks, you can click on the links:

Video: Setting up 2FA on Bittrex

Video: Creating API Keys on Bittrex

From the menu above, click on My Account

CONFIGURING SECURITY Next, click on Two-Factor Authentication to start the process of enabling 2FA:

CREATING THE API KEYS Next, click on "API Keys". Click on "Add new key..." and activate the "READ INFO" and "TRADE" selections. Then click the "Save" button. Leave "WITHDRAW" UNACTIVATED! Finally, record your API Key and API Secret Key as you will need them for the KryptoScalper application.