iso 27001 lead auditor

The best way is to search a course that can help you. Anyway, in our blog you will find many information that also can help you, for example this article "How to become ISO 27001 Lead Auditor" : https://advisera.com/27001academy/knowledgebase/how-to-become-iso-27001-lead-auditor/
After the course you need to pass an exam, which can be easy if basically you have a good knowledge about the ISO 27001. Maybe this webinar can be interesting for you "ISO 27001 Lead Auditor Course preparation training" : https://advisera.com/training/iso-27001-lead-auditor-course/

Many thanks for your info. They are very useful and clear. I watched the webinar and it is very interesting.

I want to ask a last question. The workshop 3 (finding statement non-conformity and corrective actions) in the last part of webinar is pretty complicated and I can't see the outline. Can I have others examples of workshop 3 with the outline or a link to train?

Sure, you are welcome. And sorry but we do not have other specifics examples related to your question, but if you need more information about nonconformities, I think that this article can be interesting for you "Major vs. Minor nonconformities in the certification audit" :

https://advisera.com/27001academy/blog/2014/06/02/major-vs-minor-nonconformities-in-the-certification-audit/
And in this webinar we also talk about the definition of nonconformities, how you write corrective action request and more issues related to an audit, I hope that this webinar help you "Internal audit: How to conduct it according to ISO 27001 and ISO 22301/BS 25999-2" : https://advisera.com/27001academy/webinars/