Also they have the benefit of having been designed from the ground up for managed languages on the host side.
The major paint point is lack of debugging tools, as browser vendors don't see as a priority having that kind of support on their developer tools.
There are plenty of resources out there as you get more advanced, but imo bookofshaders is a great starting resource.
In my experience, the LLM is usually good at surveying the field, finding resources you might not have found, and evaluating the quality of learning resources. The report that comes back might be super juicy, or it might just point you in some new directions, but it will probably help you get unstuck.