Nice one LC, looking good.
Few things:
Layout wise:
Page 3, random 7 midway down left hand side.
I think it would be more readable with pictures centred and captions below, rather than to the right.
Content wise:
The 'mic boost' bit is glossed over, but it's usually key for it to be on, and if people need the guide, I'm not sure they'd know how to turn it on.
Other than that I think it's top drawer, good work!