TITH I officially filled an entire Ikea Billy bookcase with codices.
Until I get a bigger place, they're not really in the order I'd like them, just what would fit best.
Shelf 1: 1st to 5th editions; Apocalypse 4th sits above them
SPOT THE ODD ONE OUT ^^
Shelf 2: 6th and 7th edition codices
Shelf 3: 6th and 7th edition rulebooks, campaigns and special editions
Shelf 4: 6th and 7th ed overspills, dust-covered specials like Clan Raukaan, WFB books, AoS books, and misc GW books
Shelf 5: 8th edition, Imperial Armour, and some White Dwarfs (there are many more WDs on the floor...)
8th ed has the least because I refuse to pay more than a tenner including postage for them.