Check out the Manual and the Quick Help link!
First, if you are not inside Audacity, open the application. Once it launches, you will see a welcome box.
Click on Quick Help if you have a specific question. The Quick Help page looks like this:
Click on Manual if you want to browse Audacity Manual to learn more about what Audacity can do:
If you are already inside Audacity, then just click on Help and you can go to either Quick Help or to the Manual.
