Special thanks to AQWorlds Wiki for the provided links.
1) You need an item that gives +25% or 30% REP (XP, CP, GOLD)!
The best options are:
Awescended +50% REP (50% CP, 30% GOLD)
Head of the Legion Beast +30% REP (XP CP GOLD) *Legion only
Gluttony's Maw +30% REP *Legion only
ArchFiend DoomLord +25% REP (XP CP GOLD)
Cape of Awe (LVL 55+) +25% REP (XP CP GOLD) *easy to obtain
7 years played badge items +25% REP (XP CP GOLD)
Awethur's Accoutrements (Below lvl 50) +25% REP (XP CP GOLD) *easy to obtain
2) You should start to farm when the server rep bonus is active!
3) Always turn ON your own rep boost!
4) To gain max rep possible:
Start the story only when all of the previous points met.
5) Only use this guide, after you completed the story.
6) If you are a Member player.
Go to Collection and check out Malorie's Quests.
Press CTRL+F to search!
List of rewards and best quests:
Arcangrove: Moonwrath's Quests: Ebony and Ivory Tusk & Rayst's Reputation Quests: Gorillaphant Poaching & Blakk's Quest: Pleased to Meat You
*Note: 3 quest at the same time! Make sure to turn ON "Allow Quest Log Turn-Ins" in the advanced options menu. Press "L" to turn in.
Brightoak: Aven Greywhorl's Quests: Defeat the Guardian Spirit
Mythsong: Lorestockapalooza's Quest: Kimberly
*Note: This is also faster for member players.
Reward: Stone Crusher(SC)
Evil: Gravelyn: Youthanize quest (until rank 4) and once you reached rank 4 repeat: Bone-afide quest
*Note: Bone-afide: kill monsters at Castleundead
Members: Gravelyn: Slithering Shadows (daily), Inquisitor Inquiry (daily), Sea no Evil (daily)
and finally: Dangerous Decor (repeat)
Reward: required to accept various endgame item quests
Doomwood: GrimDusk & GrimDawn:Doom OverLord Challenge
*Note: Invite a party to kill the boss (undead monster: use bonus damage weapons)
** This is also faster for member players.
Embersea: High Adept Caustus: Slay the Blazebinders or Pyralis: Defeat Mega Tyndarius (*Party)
Reward: Blaze Binder(BB)
Blade of Awe: Valencia: Find the Hilt quest
*Note: kill monsters at Swordhaven - Undead
Reward: Awethur's Accoutrements, Cape of Awe, Awe Enhancements
Yokai:
Member: Neko Mata - Who is the Greatest?
Non-Member: Ai No Miko - Defeat the Beast
Alternative: Dragonkoi Z Quests
Reward: required to accept Yami no Ronin quest and to buy Chunin class
Hollowborn:
Get the Seeds and Flex it quests at screen 2 of shadowrealm
Chaos:
Loremaster Maya's Quests: Embrace your Chaos
*Note: Farm at screen 10 of mountdoomskull
Chaos Militia: