Learn Braille using the braille ox, episode Four: Lesson 3, Numbers and capitals
This is the logical place to take a break from letters and switch to numbers for reasons that will become obvious. Remember, each lesson builds on the ones that came before, so hopefully you are well versed on the first 10 letters.
Today we talk about two forms of writing numbers, and we introduce the number sign. Then we go on and talk about the capital sign for a bit which is really very easy. You'll get a chance to make both sets of numbers on the braille box, and I've left the capitals for you to do on your own if you are interested.