How can I get help identifying what I saw or heard?

Just make observations of wild organisms that have photos or sounds, locations, and dates. Every observation with those things gets automatically placed in the "Needs ID" category so people who are looking for observations to identify will find them. Observations without those three things are not eligible for "Research Grade" status and thus get placed in the "Casual" category, since identifiers probably won't be able to help if there's no photo or location.

Also, many identifiers search for taxa they're knowledgeable about, so even if you don't know what species you saw, you can add a "coarse" ID like Plants, Insects, Fungi, etc. That will help people with knowledge about those kinds of organisms find your observation.