I was in a similar position a few years ago pal, thinking nobody was in my area to learn the ropes from. I knew my sisters next door neighbour was into fieldsports etc; so after a good chat, it comes to light that among other things, he's worked terriers for over 30+ years. He was willing to let me tag along and since then more opportunities have come along. It's definitely a difficult fieldsport to get into and its more "who you know than what you know" but keep a ear to the ground and you never know what might come about.
ATB and good luck