I'll start with making a list of some Galician resources I recently found online. Maybe whenever someone wants to add to the list, they could just quote what I have and add to it? Anyway, here's what I found a few days ago, when I decided to take the plunge and learn some Galician:
- https://www.omniglot.com/writing/galician.htm - Galician alphabet and phonology
- http://learn101.org/galician.php - Galician lessons
- http://mylanguages.org/learn_galician.php - Galician lessons
- https://www.lingohut.com/en/l118/learn-galician - Galician lessons
- https://www.lingua.gal/o-galego/aprendelo - Galician courses in Galician aimed for teacher-led classes
- https://play.google.com/store/apps/details?id=com.shex.beginnergalician - Android Galician learning app
- https://play.google.com/store/apps/details?id=com.shex.startfromzero_galician - Android Galician learning app
- http://ilg.usc.es/pronuncia/ - Galician dictionary (in Galician) with IPA transcription and audio
- https://gl.wikipedia.org/wiki/Colocaci%C3%B3n_do_pronome_%C3%A1tono_en_galego - Galician Wikipedia grammar entry on object pronoun placement in Galician
- https://gl.wikibooks.org/wiki/Curso_de_lingua_galega - Galician course in Galician on Galician Wikibooks
- https://www.behance.net/gallery/3896591/Uralita-Font - Galician folk typeface inspired by ancient stone inscriptions