Water-type attacks:

* Are super-effective against: Fire, Ground, Rock
* Are not very effective against: Dragon, Grass, Water
* Have no effect against: None

Water-type Pokémon:

* Resist: Fire, Ice, Steel, Water
* Are weak to: Electric, Grass
* Have immunity to: None


Normal-type attacks:

* Are super-effective against: None
* Are not very effective against: Rock, Steel
* Have no effect against: Ghost

Normal-type Pokémon:

* Resist: None
* Are weak to: Fighting
* Have immunity to: Ghost


Psychic-type attacks:

* Are super-effective against: Fighting, Poison
* Are not very effective against: Psychic
* Have no effect against: None (Dark wasn't introduced until Generation II)

Psychic-type Pokémon:

* Resist: Fighting, Psychic
* Are weak to: Bug
* Have immunity to: Ghost


Flying-type attacks:

* Are super-effective against: Grass, Bug, Fighting
* Are not very effective against: Electric, Steel, Rock
* Have no effect against: None

Flying-type Pokémon:

* Resist: Bug, Fighting, Grass
* Are weak to: Rock, Electric, Ice
* Have immunity to: Ground


Ghost-type attacks:

* Are super-effective against: Ghost
* Are not very effective against: None
* Have no effect against: Normal, Psychic

Ghost-type Pokémon:

* Resist: Bug, Poison
* Are weak to: Ghost
* Have immunity to: Fighting, Normal


Fire-type attacks:

* Are super-effective against: Bug, Grass, Ice, Steel
* Are not very effective against: Dragon, Fire, Rock, Water
* Have no effect against: None

Fire-type Pokémon:

* Resist: Bug, Fire, Grass, Ice, Steel
* Are weak to: Ground, Rock, Water
* Have immunity to: None


Grass-type attacks:

* Are super-effective against: Ground, Rock, Water
* Are not very effective against: Bug, Dragon, Fire, Flying, Grass, Poison, Steel
* Have no effect against: None

Grass-type Pokémon:

* Resist: Electric, Grass, Ground, Water
* Are weak to: Bug, Fire, Flying, Ice, Poison
* Have immunity to: None


Electric-type attacks:

* Are super-effective against: Flying, Water
* Are not very effective against: Dragon, Electric, Grass
* Have no effect against: Ground

Electric-type Pokémon:

* Resist: Electric, Flying, Steel
* Are weak to: Ground
* Have immunity to: None


Ice-type attacks:

* Are super-effective against: Dragon, Flying, Grass, Ground
* Are not very effective against: Fire, Ice, Steel, Water
* Have no effect against: None

Ice-type Pokémon:

* Resist: Ice
* Are weak to: Fighting, Fire, Rock, Steel
* Have immunity to: None


Dragon-type attacks:

* Are super-effective against: Dragon
* Are not very effective against: Steel
* Have no effect against: None

Dragon-type Pokémon:

* Resist: Electric, Fire, Grass, Water
* Are weak to: Dragon, Ice
* Have immunity to: None


Dark-type attacks:

* Are super-effective against: Psychic, Ghost
* Are not very effective against: Fighting, Dark, Steel
* Have no effect against: None

Dark-type Pokémon:

* Resist: Ghost, Dark
* Are weak to: Fighting, Bug
* Have immunity to: Psychic


Fighting-type attacks:

* Are super-effective against: Dark, Ice, Normal, Rock, Steel
* Are not very effective against: Bug, Flying, Poison, Psychic
* Have no effect against: Ghost

Fighting-type Pokémon:

* Resist: Bug, Dark, Rock
* Are weak to: Flying, Psychic
* Have immunity to: None


Bug-type attacks:

* Are super-effective against: Grass, Poison, Psychic
* Are not very effective against: Fighting, Fire, Flying, Ghost
* Have no effect against: None

Bug-type Pokémon:

* Resist: Fighting, Grass, Ground
* Are weak to: Fire, Flying, Poison, Rock
* Have immunity to: None


Ground-type attacks:

* Are super-effective against: Fire, Electric, Poison, Rock, Steel
* Are not very effective against: Grass, Bug
* Have no effect against: Flying

Ground-type Pokémon:

* Resist: Poison, Rock
* Are weak to: Water, Grass, Ice
* Have immunity to: Electric


Rock-type attacks:

* Are super-effective against: Fire, Ice, Flying, Bug
* Are not very effective against: Fighting, Ground, Steel
* Have no effect against: None

Rock-type Pokémon:

* Resist: Normal, Fire, Poison, Flying
* Are weak to: Water, Grass, Fighting, Ground, Steel
* Have immunity to: None

Like we didnt know this?

Well, I have to give her credit. Some people dont know this already and she spent so much time working on it :)