Here are some hints on how to search the inventory. It’s easy once you learn the pattern.
The second item, the “Sort By” choice, will arrange your result by number, name (probably the most useful) or price. If you enter nothing more and click the Search button you will see a list of everything in the inventory sorted that way. If you also select a category (like guitar or mandolin) you will see everything in that category. And if you enter something in the “Search For” field, you will find any item with that term mentioned in the title or description.
For example, Search For “electric” in category “guitar” will find them. Search For “gibson” in category “mandolin” will find those. Search For “martin” with no category specified will find anything that mentions martin. Search For “kay” with no category specified will find them