For those who prefer audiovisual learning, the Goethe University Frankfurt has published a series of short lectures on YouTube in English that are very approachable.

https://www.youtube.com/watch?v=NVBQSR_HdL0&list=PL_sGR8T76Y58l3Gck3ZwIIHLWEmXrOLV_&index=3

It shows "Video unavailable".