Are you amazed by all those amazing scatterplots or histograms, D3 is the first thing you should learn.
As you can see below:-
I am attaching some of my favourite files and how amazing they look is shown at the starting of the file as well. This repo contains a scatterplot, a histogram, pie-chart, a count-the-letters game and a guess the password game using D3 dom-manipulation.
(The data sets used for the plots are attached with the particular folder).
In addition to that, there are various websites where you can see the magic of D3 in action, the links are attached below.