Here you will find links to sites that provide software, guides, calculators, and online communities that can help you with the topics covered in my books. Although a few sites charge for their services, most of them are free. You will be particularly impressed at the high quality of some of the free items described here, especially the free JASP and ESCI statistical software.
I have organized sites into the following categories:
Statistical Software and Guides
Effect-Size and Power Calculators