This past year, August training was in New Taipei and January was in Taichung.
Whoever tells you about trainings in Kaohsiung and gives you forms and whatnot would be the person who should tell you about training.
My school explicitly told me training was for new FETs, but I told them I knew it wasn’t and they better give me the info. Gotta be assertive on that front!
I think most of what I can tell you about bilingual ed and such I’ve already rambled about here: Bilingual Education: Is It Really Working?