This page outlines all relevant and required links/documents to understand and consume the ISO 27001 standard.
Official ISO 27001 Standards Website Page
https://www.iso.org/isoiec-27001-information-security.html
The Standard (and all associated documents) can be found in this secure folder.
https://drive.google.com/drive/folders/1fpjUg5JySigrGbcpclrKD4XTSyjuikPS?usp=sharing
An electronic book version of the Standard can be found in this secure link.
https://drive.google.com/file/d/1IOH0-2ApPUrxyv2xr4l-7MDsZHTrPr-y/view?usp=sharing