I had made some changes in my site but due to some reasons it is not verified by wenmaster tool.So I can start Off page Seo of that page or i'll have to wait till the time it is verified?
can you share domain ? so i can analyse why your website is not verify, you can use meta tag to verify your website if .html file loading not work
No you don't need to wait till the time of verification, you can start off page activities. Good Luck..!
No, my experience say no