Okay, imagine you have a toy and you want to share it with your friends. The Irish Free Software Organisation is like a big group of people who believe that computer programs should be like toys - something that people can share and play with for free.
You know how Mommy and Daddy buy you some toys and you can't really change them too much? Well, sometimes companies that make computer programs are the same way. They make the program, and you can't really change it or share it with your friends without first getting permission or paying them money.
The Irish Free Software Organisation wants to change that. They work to create programs that people can use and change for free. This way, everyone can help make the programs better and easier to use.
They also believe that people have the right to control the technology in their lives, so they teach people how to use computers and other technology to make their lives better. The Irish Free Software Organisation wants to make sure that technology is accessible to everyone, regardless of their financial situation.
In summary, the Irish Free Software Organisation is a group of people who want to share information and technology with everyone, for free. They believe that computer programs should be like toys - something that people can play with and change together!