Where can I find the additional reading?

I have the 2019 SBR Workbook, and it constantly refers to paragraphs that should be read. I.e. (paras. 2.5-2.22) – the issue is, I can’t find where it is trying to refer me.

I have downloaded the e-book, but still can’t seem to locate where it wants you to read!

Can anyone shed some light on it for me?

Thanks