I just completed a Craftsy course – it’s free. Chef Brendan McDermott runs you through a lot of what you need to know – can’t recommend this more highly – learned SO much – particularly the fact that all these years I have been doing it wrong and very unsafely!! Worth doing, and practicing!
Link is below
Complete Knife Skills – you do need to sign up to craftsy – again it is free, and they don’t spam you with emails.