Will Turbo Tax walk me through claiming income from Amazon Flex less than 600 if I don't have a 1099 from Amazon?

Yes, this is considered Self-Employment Income. You will file a Schedule C and you can also deduct any expenses related to earning that income.

To file a Schedule C, here are the steps:

1. Sign in to your account and select Pick up where you left off
2. At the right upper corner, in the search box, type in schedule C and Enter 
3. Select Jump to schedule C 
4. Follow prompts,