Write the English alphabet on a piece of paper, then write it backwards underneath so A = Z, B = Y, etc. For example, SVOOL DLIOW = HELLO WORLD. Now write your own message in the code and post it as a comment below. Can you read the coded messages from anyone else?
A browser is the program that makes it possible for you to go on the internet, for example Google Chrome or Safari.
I hope that helps.
LearnEnglish Kids team