Jack Dorsey became a billionaire after founding Twitter in 2006. He stepped down as Twitter CEO in 2021 and supported Elon Musk's takeover of the company. Dorsey now runs the financial services ...

Add on a QR code that takes you to a website packed with extra content, including arts and crafts and many fun songs from The Mubbles world, and the result is a fabulous, all-singing, all-dancing book ...