Computers can do lots of amazing things. Do they ever make mistakes? Of course! People write code to tell computers what to do, but sometimes the code has a bug, or an error. This low-level introduction to computer-code bugs and errors is perfect for readers who are still a couple years away from coding on a computer. Bugs and errors are not exactly the same, but they are both mistakes in code that need to be fixed. Ralph, from the crowd-pleasing Wreck-It Ralph franchise, will build a connection with readers new to coding concepts and help them along the way.