I had a few people ask me about villager trading so I decided to make a post about it here! 
If you aren’t already aware, I have had my own villager trading set up since the start of this season.
It is located in aphs_shop, there is a sign pointing to a water elevator labelled villager_trading. There are 12 out of the 13 villager types accessable for free. However, librarian villagers are currently at a seperate warp, costing 50 gold, because Enchanted_Books are very valuable in the early stages of the season. I do intend to lower the price as the season progresses and Enchanted_Books become less valuable. Please remember that other people can use the villager trading mechanism so some may be out of stock as villagers can only restock a few times every minecraft day. Without further ado, here is what you can trade with villagers!
Farmer
Things you can give them:
- Carrot
- Potato
- Beatroot
- Wheat
- Melon
- Pumpkin
Things they can give you:
- Bread
- Pumpkin Pie
- Apples
- Cookies
- Suspicious Stew
- Golden Carrot
- Glistering Melon Slice
Cleric
Things you can give them:
- Rotten Flesh
- Excess Nether Wart
- Excess Glass (bottles)
Things they can give you:
- Redstone
- Lapis Lazuli
- Glowstone
- Ender Pearls
- Bottle O’Enchanting
Mason
Things you can give them:
- Clayballs
- Stone
- Andesite
- Granite
- Diorite
Things they can give you:
- Bricks
- Chiseled Stone Bricks
- Polished Andesite, Granite or Diorite
- Coloured Terracotta
- Coloured Glazed Terracotta
- Quartz Pillar
- Quartz Block
Toolsmith
Things you can give them:
- Coal
- Flint
- Iron
- Diamonds
Things they can give you:
- Stone, Iron and Diamond tools with low enchants (if any)
Armorer
Things you can give them:
- Coal
- Flint
- Iron
- Diamonds
Things they can give you:
- Stone, Iron and Diamond armour with low enchants (if any)
Weaponsmith
Things you can give them:
- Coal
- Flint
- Iron
- Diamonds
Things they can give you:
- Stone, Iron and Diamond weapons with low enchants (if any)
Shepherd
- Some dyes - use white dye from bones!
- Some wool
Things they can give you:
Things you can give them:
- Shears
- Coloured Wool
- Coloured Carpets
- Coloured Beds
- Coloured Banners
- Painting
Leatherworker
Things you can give them:
- Leather
- Flint
- Rabbit Hide
- Scute
Things they can give you:
- Dyed Leather Armour
- Leather Armour
- Leather Horse Armour
- Saddle
Fisherman
Things you can give them:
- String
- Coal
- Raw Salmon, Raw Cod and Tropical Fish
- Pufferfish
- Specific types of wooden boats
Things they can give you:
- Bucket of Cod
- Cooked Salmon
- Cooked Cod
- Campfire
- Fishing Rod with low enchants
Cartographer
Things you can give them:
- Paper
- Glass Pane
- Compass
Things they can give you:
- Empty Map
- Coloured Banner
- Item Frame
- Banner Pattern (Globe)
Butcher
Things you can give them:
- All Raw Meats
- Coal
- Dried Kelp
- Sweet Berries
Things they can give you:
- Rabbit Stew
- Cooked Meat
Fletcher
Things you can give them:
- Flint
- Sticks
- Feather
- String
- Tripwire Hook
Things they can give you:
- Bows (with and without enchantments)
- Crossbows (with and without enchantments)
- Arrows
- Tipped Arrows
