If you can't easily figure out where it is stored and how it is generated you should probably ask along with your inquiry whether the maintainers would be interested in contributions in that area.
If you can't easily figure out where it is stored and how it is generated you should probably ask along with your inquiry whether the maintainers would be interested in contributions in that area.
Some projects use mailing lists, forums or even irc.
Open, group-based forms of communication are usually preferred because it allows anyone qualified to respond instead of pinning it on a particular person.
Larger projects, especially corporate- or foundation-backed ones, might have less-technical staff dedicated to the web presence/PR/outreach etc. which might use other communication channels than the developers.
> Then I try X and it blows up in my face because it turns out you only do X under (long list of conditions that no one ever told me and assumed I knew).
You don't necessarily have to know. Some exploration and just asking for pointers is often required.