Welcome. i'm a novice myself and folks here have been incredibly helpful and welcoming, I'm learning every time I visit the forum.
I notice you're in Cornwall, last year I went for a couple of stalks and some rifle instruction with Ian Farrington at Farrington Deer Services, just over in Dorset. Very helpful and great teaching and his support letter helped me get my FAC without need for mentoring or any other restriction, though I do own a little bit of land so I have somewhere to shoot. If you're new to stalking, some guided instruction is a great way to start and I recommend Ian highly.