It's been a while since my last post on gnuplot, and this one is not going to be very technical. I just wanted to call your attention to the second edition of Philipp Janert's brilliant book, Gnuplot in action https://www.manning.com/books/gnuplot-in-action-second-edition. The book contains a hefty dose of gnuplot recipes and plotting tricks, all in an easy-to-follow fashion. In fact, I would go as far as saying that Gnuplot in action is the definitive book on this software. I would also point out that this second edition focuses on the new features of gnuplot 5.0, which was surreptitiously released about a year ago http://gnuplot.info/ReleaseNotes_5_0_3.html. Many newly-introduced features render the tricks discussed on this blog obsolete, and plotting with gnuplot is much hassle-freer now.