Completed the tree, but admittedly it was shorter back then. I also did it in parallel with the Language Transfer podcast, which I've mentioned on HN before bu

Completed the tree, but admittedly it was shorter back then. I also did it in parallel with the Language Transfer podcast, which I've mentioned on HN before but is an amazing resource for understanding how a new language works structurally and grammatically. I did find Duolingo valuable, but purely for vocab.