Notebooks

Visualization

Recommended

I wrote few simple codes to create decent plots using python.
LearnFree (Director). (2016, October 5). Beginning Graphic Design: Color [Video recording].
Information is beautiful
Muth, L. C. Your Friendly Guide to Colors in Data Visualisation. 2018, Her Blog

Software Tools

Inkscape explained by Logos by Nick
Inkscape tutorials by TJ Free
Inkscape tutorial for beginners (really good)
cpt-city: An archive of color gradients
Got this link from Hacker News when I posted a Nature Communication paper The misuse of colour in science communication there. This webpage contains color gradient files, and importing them in matplotlib is possible using packages like getcpt-master.
Palettable
Useful Python package. Contains an extensive set of diverging, sequential, and qualitative colormaps. Very useful.
cmasher
Useful Python package. Contains some new colormaps; I don't like them that much but they are interesting.

If I get time

Fundamentals of Data Visualization by Claus O. Wilke