Really cutting edge information of the specialized or proprietary kind is pretty tricky. I find a lot of it through things like specialty conferences and YouTub

Really cutting edge information of the specialized or proprietary kind is pretty tricky. I find a lot of it through things like specialty conferences and YouTube interviews. But for that you really have to know who the various luminaries of the relevant fields of interest are, and kind of track their world a bit. A lot of them don't post online much because for one, they have recognized that the platform we all have here in general is designed for grosso modo memetic "learning" which happens in a native self-reinforcing projection-style loop as opposed to more fluid, open learning and knowledge production by design. So maybe what you'd be more likely to find that's useful and cutting edge here on the web, and in more readily consumable form, is more like public project updates and data. For this I would offer GitHub, phys.org and your locale's weather service, e.g. weather.gov. You could probably lift the world with those sites if you can readily metabolize what they've got going on.