I (Fernando) wrote this class for UnderdogDevs! (@UnderdogDevs) are a group of software developers supporting the formerly incarcerated & disadvantaged in their transition into the software industry.
The material contains two playgrounds that act as workbooks. Start with Transform-Elements-Starter.swift.
Fernando (@fromJrToSr) is a senior iOS developer with 10+ years of experience, that has taught literally dozens of developers in bootcamps and schools like LambdaSchool, Big Nerd Ranch and bloc.io.