I provided step by step instructions on how to use the search options and filters on my site, and use the search query on iNat explore, identify, and export pages in this post.
The about page also has instructions about the various features including searching multiple taxa and places, turning on/off map layers, viewing all photos and sounds for observations, viewing line graphs for the observations, filtering by annotations and observation fields, viewing and searching identifications, downloading observation annotations, and downloading identifications.