Statistical software

Most of this book can be read without relying on any specific statistical software. However, some parts explicitly mention and refer to jamovi (The jamovi Project) and/or SPSS (IBM Corp 2016). jamovi is free and is like (but not exactly the same as) SPSS. From the jamovi homepage (sic):

jamovi is a new ‘3rd generation’ statistical spreadsheet. designed from the ground up to be easy to use, jamovi is a compelling alternative to costly statistical products such as SPSS and SAS.

https://www.jamovi.org/

References

IBM Corp. IBM SPSS statistics for Windows, version 24.0. Armonk, NY: IBM Corp; 2016.
The jamovi Project. jamovi (version 1.0) [computer software] [Internet]. Available from: https://www.jamovi.org.