since a few weeks now you can download the SAP training materials (e.g. SAP01, etc...) as PDF from the SAP Learning Hub and keep them available offline. SAP has done us a big favor with this.
I have the Learning Subscriptions "SAP Learning Hub, discovery edition".
I have shown how this works here.
Log on to your SAP Learning Hub Account
Choose “Browse Contetnt
Choose the content you want to learn… e.g. saptec…
Select the course from the list
Choose "Assign to me
Choose Course Begin
After reading click here…
After reading, you can rate the course, and print a BackgroundReport/ Certificate
You can also answer a voluntary survey about the course.
You can also download all Certificates of Completion together...