Download Google Drive or Adobe Acrobat Reader (free). Save the PDF to your device's "Downloads" folder. You can then annotate using a stylus or your finger.
Replace "episode" with "lecture," "module," or "week 12" if your initial search fails. Some instructors use different terminology. episode poli 12 pdf
If the direct links are not working, use advanced Google operators. Copy and paste these commands into Google: Download Google Drive or Adobe Acrobat Reader (free)