Tableau has excellent videos for getting started. You can start from there as it has step by step tutorials. Follow the link "Getting Started | Tableau Software"
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Thanks for the information. But the thing is I have an excel file of large data that i don't even know what it is. I need anyone to assist me regarding this. Can i have your mail so that i can personally mail you regarding my confusion and excel file and once you overview me on that file i can work on it and learn rest from the videos.
Thanks and Regards,