I got a super noob question about time series.

First of all apologies for english not being my first language.

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I have spreadsheets with twitter data containing specific uses of a certain proverbs.: https://docs.google.com/spreadsheets/d/17MP9NZdCv4ZUkwjnSpTqATDomqbww6fvVzYNxHBHrS4/edit?usp=sharing

I would like to know how to plot the frequency of use (how many times a tweet in this data set is used) over time. I think simple selecting the column "date" and plotting is not the right way, can anybody tell me what I gotta do, or point me into the right direction.

Bonus: What other interesting/useful analysis do you think can be performed with this sheet.