The book is also on nostr as nostr:nprofile1qqsv2nuuvq55egyqd2r0fd2ppx8nl006j03llf02275qv42r0s6zfxspzamhxue69uhhyetvv9ujumn0wd68ytnzv9hxgtcu6rtg7 btw - not very active though!
Discussion
Also, as a full book, with all audio files and advanced formatting.
https://alexandria.gitcitadel.eu/publication?d=21-lessons-by-der-gigi-v-1