1) Make a Udacity Account:  https://www.udacity.com/

2) Enroll in the FREE Intro to Java Programming Course

3) Do Problem Set #2, #1-20

here are answers to the hardest ones:

ANSWERS TO UDACITY:

6) @return double thePerimeter

12) local variable

15) employee

17) skip this problem

19) this

20) this. _________________ = _________________