Even if you are like me, new to both bikes and spannering/wrenching it is indeed very straightforward forward. Of course my bike came with it fitted but to undergo other repairs I’ve had it all off twice recently. The only part I didn’t do was to determine the number of spacer washers on the centre stud to correctly align the inner primary case. I think Matt may have redesigned that part to be adjustable now anyway.
The best video I found was on ‘the mighty garage’ channel, a series in 4 parts.