Where did tom from the prince and pauper learn to read write?

In Mark Twain's *The Prince and the Pauper*, Tom Canty learns to read and write on the streets of London.

He learns from the street urchins, who are surprisingly literate despite their poverty. They teach each other to read by deciphering signs and advertisements, and Tom becomes quite skilled in reading and writing.

This is a key element of the story, as it demonstrates the power of education and self-reliance, even in the most challenging circumstances.