Where can I find documentation on a study?

For built-in SC studies the first place to look is on the Technical Studies Reference on the SC website.
The easiest and fastest way to get to the correct documentation page is by clicking the study description button inside SC.
The study description button also works for any custom study that you are using. It will depend on the developer of this custom study if there is any useful Study documentation made available.
Clicking the Study Description button will open a browser window and display the documentation page.
Check the image below for the location of the "Study Description" button.
Study Description Button