For learning the principles, many reputable environmental consultants, government agencies (like the EPA), and accredited certification bodies (like BSI Group) provide white papers, webinars, and summaries of ISO 14064-1 for free. Key Components of ISO 14064-1:2018
If you are seeking certification, I highly recommend purchasing the official version to ensure your team is working directly from the source text. iso 14064-1 pdf free download
(Greenhouse gases — Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals) is the international standard that provides principles and requirements for preparing a GHG inventory. For learning the principles