Hello!
We are constantly making calls for testing in a wide variety of subjects. This is a great way to get started contributing to ubuntu, and learn about how the code is prepared and polished.
You can follow the UbuntuTesting account in twitter to get notified when there’s something new to test:
https://twitter.com/ubuntutesting
And if you are a developer and want to get more hands, eyes and different hardware to try the thing you want to publish, let me know and we can get a call for testing going on.
pura vida