In the second part of The Wolfram Language: Practical Programming, you'll learn to use Wolfram Language for packages, namespaces, interfaces and deployment.

In the first part of The Wolfram Language: Practical Programming, you'll learn to use Wolfram Language to make code readable and efficient, avoid errors in code and the coding requirements ...

In the second part of Mathematica: An Introduction, you'll learn about practical programming and visualisation skills by using Mathematica

The first part of Mathematica: An Introduction will give you some background information of Wolfram Technology and the basic functions of Mathematica.