Wood Planks

Wooden planks''' is a common category block used for several crafting recipes. While not as strong as bricks, it can still prove to be quite hard to destroy. It is also used as a common building material, as it is easy to obtain as long as trees are plentiful, which they usually are. These blocks are said to be the most efficiant in the game because trees are so plentiful. Wooden planks can be used as a fuel for furnaces. As of 0.8.0 there are birch planks (vanilla colored), oak planks medium (colored), spruce planks (dark colored) and redwood (creative only). After 0.9.0 your house may catch on fire because of a lava pool.  In 0.9.0 jungle planks will be added to survival as well as Acacia and Dark Oak.

Crafting
To craft wooden planks you need 1 wood of any kind. Wooden planks have their own variant of tools, and weapons.(They aren't the most durable tools though.)

Wooden planks can be crafted into sticks, which is an ingredient in almost all tools and weapons. It can also be used for a wooden Slab and stairs. It can be used for creating charcoal. You can also make a wooden door. They also make rails.

Trivia

 * Wooden planks, unlike wood (logs) cannot be cooked to make charcoal.
 * Saplings are a good use to replenish trees for more wood.
 * It can be set ablaze with flint and steel or Lava.
 * Any kind of wood can be used for crafting.
 * It can be used for fuel in a furnace.
 * Wooden Planks are technically renewable and infinite, if you use saplings.
 * You can not craft wooden planks any more

Types
Oak Planks - Most common, obtained from oak wood. Before 0.8.0 this was the only plank you could obtain even if it wasn't an oak tree.

Birch Planks - Also common, obtained from birch wood. Vanilla colored. Added in 0.8.0, survival and creative.

Spruce Planks - Only found in tundra biomes. Dark color. Added in 0.8.0, survival and creative.

Jungle Wood - Only in creative so far. Reddish color, jungle planks. Added in 0.8.0, creative only. In 0.9.0, it will be added in Survival.

Acacia Wood- Will be added in 0.9.0. Can be found in the Savanna biome.

Dark Oak- Will be added in 0.9.0. Can be found in Taigas.