I really appreciate this website providing free learning guidance to many of us like me, I have started F5 paper aiming for an exam in December 2020 and my question is if want to pass this exam studying your lecture notes, watching lectures and doing practice questions are enough or do I need to study so called BPP or KAPLAN study test.
If you are watching my free lectures then you do not really need a Study Text.
However you do need a Revision Kit from either BPP or Kaplan. The Revision Kit is full of past exam and other exam standard questions for practice, and practice at these questions is vital to passing the exam.