How did you get in to spearfishing? I saw it in a sailing video recently and it appeals as far more interesting and time-efficient than traditional fishing. Can you recommended any media?
Through another friend in tech - it's good to have someone to show you the ropes because there is a lot of tribal knowledge. YouTube and forums are somewhat of a help but most of what I've learned is from listening at the spear shop or going on public charter trips and listening to the elders.
This guy has my favorite spearfishing YouTube channel - https://www.youtube.com/watch?v=G0tqvgU_8Qg