A friend of mine who is also taking the NAC-OSCE exam in September advised me to watch some YouTube videos to help me revise my physical examination skills.

Some channels you can check out are:

Other helpful videos include:

NAC OSCE INTRODUCTION VIDEO by Crack The NAC

If I were to pick only one channel or playlist, I would go with Geeky Medics. Their videos seem to be more straightforward and clinically correct.