have around 12k records.
i break it down a number of ways; i have a separate section for 12" 45rpm pressings, and a separate section for Mono pressings. also box sets are mostly all together.
the bulk of my collection; my non box set stereo 33 rpm records, are generally broken down into (1) pop/rock/folk (by artist alphabetically), (2) Jazz/blues (by artist), and (3) classical (by composer).
there are a few special sections from one label, and i have a special section for rec’s from one friend of mine who knows current pop music separated from the general pop/rock..
i can find most records in 15-30 seconds. with some classical i recall how the album cover looks, or remember something, but can’t find stuff quickly as i’m learning classical. just bought a 3000 classical pressing collection last fall, so i plan on learning more. learning about music is one of the joys of vinyl. some degree of organization helps.