In my opinion, the hardest part of question 4 are the note taking from the reading and merge the reading with the lecture. Hopefully with these links it might be easier to overcome those problems.
My favorite site
https://www.superlearn.com/index.shtml
https://www.youtube.com/watch?v=tfNHVhOm59Q
https://www.examenglish.com/TOEFL/TOEFL_Speaking_part4.htm
https://englishsuccessacademy.com/free-practice/toefl-speaking-task-4-6/
note taking from a lecture (video)
https://www.youtube.com/watch?v=cghIYir2AUM
from the same channel how to take notes
https://www.youtube.com/watch?v=SWLGiauo2z8&list=PLA4wJWRR2oA_xv2p7IlmL2C7K_XOgk57P
from the same channel use abbreviations
https://www.youtube.com/watch?v=TtsYZ9V3qLM&list=PLA4wJWRR2oA_xv2p7IlmL2C7K_XOgk57P&index=2
Additional information for the test: https://www.facebook.com/TOEFL.Lab/
