Well explained.
Teaches grade one braille in 7 minutes.
For those of you who don't know what it is, it is a system of dots representing words, numbers & punctuation marks that are raised slightly so that people who are blind or have very weak vision can still read & understand text by feeling the patterns of the raised dots.
Obviously none of you here are blind but if you are ever interested in learning this than the above video is a good simple resource for basic grade 1 braille.
And it might seem complicated but in reality it is very easy to learn & memorise.
