There are several kinds of fence gates, all retaining to the types of wood there are. MCE had trouble with them before, but he finally got it. They work like normal fence gates.
Birch Fence Gate
Spruce Fence Gate
Jungle Fence Gate
Acacia Fence Gate
Dark Oak Fence Gate
Willow Fence Gate
Ebony Fence Gate
Silkwood Fence Gate
Gelid Fence Gate
Birch Stick or Spruce Stick or Jungle Stick or Acacia Stick or Dark Oak Stick or Willow Stick or Ebony Stick or Silkwood Stick or Gelid Stick + Birch Wood Planks or Spruce Wood Planks or Jungle Wood Planks or Acacia Wood Planks or Dark Oak Wood Planks or Willow Planks or Ebony Planks or Silkwood Planks or Gelid Planks
For creating a "door" within fenced areas.