Working from your actual sources.
THE MOST RELIABLE APPROACH
Give the model your material and ask questions about it.
The answer is grounded in what you provided, so it is far more reliable.
USEFUL PROMPTS
"Explain this passage in simpler terms." "What is the main argument here?" "How does this relate to [other topic]?" "What would an exam question on this look like?"
FOR DENSE MATERIAL
"Summarise this chapter, then explain the three most important ideas in plain language."
Then read the chapter properly.
Summarising to decide how to read is useful. Summarising instead of reading is not.
WHAT NOT TO DO
Rely on a summary of material you will be examined on Skip reading because the summary made sense
Understanding a summary is not understanding the subject.
FOR PROBLEM SETS
Work the problem. Then ask about your method.
WHAT TO BE CAREFUL WITH
Copyrighted material. Check your institution's position on uploading course texts.