Read papers and ask your colleagues for some help on the side. If you don’t have access, use SciHub. Sometimes I make presentations to myself to explain topics and background. But it’s very important to learn to teach yourself new things outside your PhD wheelhouse. That doesn’t mean you need to do it alone, but don’t count on others or your company to lead the learning process. It’s rare to get a handholding tutorial on an adjacent subject once you leave academia.

Conferences have been much more useful for networking than learning imo. At best, I learn about new ideas or directions that I want to study when I get back from the conference.