PDFs for Step-by-Step exercises in Appian Developer course appear corrupted or outdated

Hi everyone,

While following the Appian Developer course, I noticed that multiple PDFs for the Step-by-Step exercises (for example, Build an Application: Step 2) cannot be opened. They seem corrupted or possibly outdated for the current version.

I’ve tried downloading them again and opening in different viewers, but the issue persists.
Is there an updated version of these documents or an alternative resource for these exercises?

Thanks in advance for any guidance!