Sharing reports with free users --- updated question

I had asked this question previously and thank @Shanky Paul for answering! I'm still trying to figure out if I give them access to the source sheet, will they be able to see the source sheet and if so, then why would I create a report? There is a column in the source sheet I don't want to share. Thank you!

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Hi - I have created a report and shared it with an external free user, however, he is unable to see anything on the report. I also tried publishing the report and placing it as a widget in a dashboard with no luck. Is there anyone that has done this and can let me know how to provide them the info? I also wanted them to be able to write comments in one columm. Thank you in advance!

Answers