Helmet is the first bit of kit I grab for the visor and ear defenders to keep my vision and stop the ears ringing. Get something from a decent company and you’ll be able to get spares.
I wear trousers due to the amount of time I spend cutting and the nature of our sites, probably also wise if you’re an amateur user, on a saw horse the follow through is to your leg. Front protection, 20m/s will be sufficient.
Personally, chainsaw gloves aren’t for me. Poor fitting, bulky and hot with pointless protection (low speed, single knuckle set, saw protection) so I just use comfy work gloves.
And a set of files and sharpening know how, blunt saws are ****. Far safer sharp and tensioned right.
May as well get to know your local ‘saw shop, you’ll be needing more parts and advice in time.
As for use a duvet. Nearly pissed myself with laughter.