I am a Magento 2 Professional.
To improve my skills, I am following an educational video series made by Magento Master Cuong Ngo. He usually takes a step-by-step approach in his videos and even publishes the source code of his tutorials on GitHub. Though, in one of his video (you can watch it here: • Custom Theme in Magento 2 - Lession #5 Wor... ) he skipped the part about using jQuery to update images uploaded in dynamic row system configuration.
However, I managed to code that part myself.