Issues with lesson

[jekennedy]

For this section: 03_lesson/02_part:

1. There's a typo in the code: unferflow

For the overall lesson:

1. Clicking deploy button on any step results in this error: ">_ Deploy failed: 1010: Invalid Transaction: Inability to pay some fees , e.g. account balance too low"
2. None of the other buttons work (for trying out the service methods)
3. After they complete the whole lesson, it would be good to suggest something as a next step . E.g. look at github samples, or further docs.