To get to the learning, please do go under the Support Portal, your Dashboard, then training as shown here:
From here, please do a find on 'zosmf' and see these 5 course listings:
The 6th one is found by doing a find on 'retrieval':
When clicking on one, such as 'zOSMF Product Install 200', please then click on 'show more', and under 'Resource' the name/link to the PDF will be shown:
Within the above manual, defining the CSI is done within the Deployment Steps.
Here is for example a screen shot showing the various Deployment Steps: