What is the best type for Monotype teams?
What is the worst type for Monotype teams?

You'll see here.

This is taken from http://www.smogon.com/forums/showthread.php?t=67492

-Best-
Psychic
Poison
Water
Normal
-Adequate-
Steel
Fire
Ground
Ice
Flying
-Poor-
Electric
Rock
Grass
Dark
-Worst-
Dragon
Ghost
Bug

What are the duel types the types have to offer?

Psychic:
Normal, Water, Grass, Fighting, Steel, Ground, Flying, Rock

Poison:
Water, Grass, Ghost, Fighting, Ground, Dark, Flying, Bug

Water:
Normal, Grass, Fighting, Ground, Dark, Flying, Poison, Psychic, Rock, Dragon

Normal:
Water, Psychic, Flying

Steel:
Fire, Water, Electric, Fighting, Ground, Flying, Psychic, Bug, Rock

Fire:
Fighting, Steel, Ground, Dark, Flying, Rock

Ground:
Fire, Water, Grass, Ice, Flying, Poison, Psychic, Bug (Wormadam...), Rock, Dragon

Ice:
Water, Grass, Ghost, Ground, Dark, Flying

Flying:
Everything except Fighting.

Electric
Water, Steel, Flying

Rock
Fire, Water, Grass, Ground, Steel, Flying, Psychic, Bug

Grass
Water, Ice, Fighting, Ground, Dark, Flying, Poison, Psychic, Bug, Rock

Dark
Fire, Water, Grass, Ice, Flying, Poison, Rock

Dragon
Water, Flying, Ground

Ghost
Ice, Dark, Flying, Poison

Bug
Water, Grass, Ground, Flying, Poison, Rock

Surskit is NOT included.

I've used Grass before, and got me into the Finals of a tournament.

Definitely not poor ;)

I think by water you should have rain dance in brackets next to it as many mono-types struggle to deal with rain dance. Dragon took a massive blow with the banning of Salamance and Latias. Dark is hard to use without ubers, so I would consider moving it down a tier.
Also please delete my monoteam types thread as it is the same as this.

Also ShinyAzelf could you please post your team as I am curious to see how mono-grass would work