[BetterRed]

I mainly have non-fiction books, most books only have one tag - eg "US Civil War", "East Asian Food", "Investment Banking" etc

If I want to find all the books that cover the Battle of Antietam, or I want a recipe for Kang-kong then I use Windows Full Text Search. The response time on my ~45,000 book library is usually sub 2s.

For the Kang-kong recipe I would probably flick through the books directly from the search results and copy the chosen recipe to my Galaxy Note and head for the kitchen.

For the Antietam example I would probably use a process that utilises the Import List PI to create a Reading List or I might just save the Windows Search results file into the Library (a recently realised 'light bulb moment' alternative)

The problem with extensive tagging of non-fiction is that it assumes a) you have read the book and b) you already know what you're going to be looking for in the future.

BR