Learned about control statements
  * good review especially  the unless
  * condition operators are nice to know
[#54145927]
learned about true and false
  * interesting way of learning about truth
  * I still have to learn to think a certain way
    in order to learn to program
Learned About Exceptions
  * I feel like it will be a while until I use
    what I learned
[#54145937]
Update about_iteration.rb
Update about_iteration.rb
Update about_blocks.rb
Update about_blocks.rb
Learned about iteration
  * Inject still confuses me
  * but I know the difference between map and
    each
Learned about blocks
  * Explicit block need more research