This guide shows you one or more of the best and most efficient routes to farm Arcane Tome in World of Warcraft Classic and is exactly what you need if you want to gather materials yourself instead of spending your gold on it on the auction house. If Arcane Tome is not what you are looking for, you may take a look at all available farming guides.
Arcane Tome and Siegel des Sonnenzorns are Items that are needed to push your reputation with the Scrylers. Since every players wants his Shattrath Faction exalted as soon as possible, the demand for these items is usually very high.
You want to kill blood elf NPCs to get these items.
Farming Arcane Tomes in Netherstorm
Farming Arcane Tomes in Shadowmoon Valley
Farming Arcane Tomes in Terokkar Forest
For suggestions, improvement proposals or in case of finding a bug you are
welcome to contact me on my Goldgoblin Discord. Thanks a lot!