Thanks for your reply @adajose (MOD).
I have few questions and also clarifications from my end.

1. Can I not post the same content in different communities I join? and resteem it to my own blog?
   Clarification-This is what I did
   Also I wanted to know if I can post the link of my original blog in my communities?
   I did the same, in my blogs when I resteem it shown multiple copy of the same blog, but they are in different communities as there is no option to share with multiple communities.

Both are my original contents, only the image I have taken from Copyright free site.

I am new to steemit. Thanks for letting me know. May I know the source where I can know more about the rules and guidelines.

Thanks,
Vinuta