Here are two links to a braille chart:
Go to wikipedia, they have a braille dictionary.
You cannot find a Braille book in Pokemon FireRed. You can however find the Braille alphabet to make notes from inside Mt.Ember. Mt.Ember can be found just north of Knot Island.
Using a braille chart, you can match up the braille with their corresponding letters to find out what they mean. Here is a braille chart: http://en.wikipedia.org/wiki/Braille
You cannot find a Braille decoder sheet in any of the Pokemon games. Braille is very simply and easy to translate if you print off a Braille alphabet sheet for reference.
You can not speak braille on Pokemon.
Braille can be found in many of the Pokémon games. You can easily find out what it means by looking up the Braille alphabet.
You can find things written in Braille in the ancient ruins in the Pokemon games. To read it, you can simply look up the Braille alphabet.
When you need to find the the ruby and sapphire, when you need to find the regis...
On island one, there is a cave with a ruby and a full set of braille alphabet.
The Pokemon games sometimes feature Pokemon Braille puzzles. Braille is a real form of alphabet that is used by the blind.
Braille can be found in Mt ember and dotted hole if you go to Mt ember you can find braille that teaches you each letter one by one.
A braille reader does not exist in Pokemon Ruby or any Pokemon game with braille used as a puzzle. Translating the braille for yourself is very simple if you print off a braille alphabet sheet.