Here is few sources that you can go through, when you get bored during the course…
Advanced Bash-Scripting Guide
Bash one-liners explained
The Bash Primer
Explanation of a scrollback buffer
tldr pages
explainshell
Bash game to celebrate 50th anniversary
Regex golf
Regex test and explain
Faces behind Unix
A few nice cheat sheets
Martin Krzywinski: Keynote on Visual Design Principles
Nature Methods’ Points of View
Gestalt principles 1
Gestalt principles 2
Well designed color palettes
Bedtools
Vcftools
VCF
GFF
BED