What is android?
You can get a good explanation from wikipedia but in a nutshell it is a computer operating system designed with mobile devices in mind.
Do you have a great idea?
Do you think others would like it?
But even if it is just for you and you would like that idea as an app on you mobile phone or tablet you can create it.
Yes it’s true!
It takes a little time to learn how to do it but there is lots of help available on line and great tutorials.
Free development environments exist and can easily be downloaded and installed on your PC.
Take a look at the resources page for more details.