Ask HN: Learn(travel) Photography Online?

Can anyone recommend good resources to properly learn photography online? I'd like a structured course. Free, or paid is ok. I'm thinking DSLR/Camera style photography.

Planning to travel for a few months next year, and want to get very good at photography ahead of that time. Just personal hobbyist though. Would love professional grade quality, but not looking to make it my job.

Any tips / courses / youtube playlists etc? I'm a big audio/visual video fan for learning.