“Hexadecimal uses the decimal numbers, 0 through 9 and six additional symbols, the letters a through f. So that's 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, and f…

Each hexadecimal digit represents 4 bits, half a byte, which means that a single byte can have values ranging from 00000000 to 11111111 in binary, which can be much more compactly represented in hex as 00 to FF.” - Bitcoin for Developers 🤓

Back in the books I go 📖

?cid=2154d3d7fss9rpfs8ev1gxljnjxot806qsntj2mjomffpmaf&rid=giphy.gif&ct=g