1.3 incorporate error handeling into applications

1.3.1 structured expection handeling (try-catch-finally)

1.3.2->unit testing

1.3.3->throwing expectations

1.3.4->defensive coding

1.3.6->understand scoping in exception handeling

1.4 construct and analyze code 

1.4.2 delegate

1.4.3 promises

1.4.4 sync vs async

1.4.5 imutability