Well, maybe here's some advice, from my story
Originally I'm from Devon (Newton Abbot) and have been living in Yorkshire for the last 23 years- I don't work specifically in Arb, but in Agriculture and related industry
As a youngster, at 14-15 I got work on local farms, mucking out, feeding anything and then gradually I was allowed to drive the tractors/Landie on the farm. We did some farm tree work etc
Initially I worked for nothing, then started to get paid and fancied a career in farming and Agriculture
At 16 I got a Suzuki 50cc bike, rode in all weathers and travelled to farms for work - plus I attended day release, gaining NPTC qualifications and also took my tractor test (all paid for out of my meagre wages, but I was investing in myself and my future, whilst living at home), thus meaning I was more useful to a farmer and my experience broadened
When I was 17, I got a bigger 250cc bike and travelled everywhere on L plates, again in all weathers.
After a few months of saving up, I'd bought a Mini 850 Van and took lessons, passing my test 2nd time
Now with more experience (working for low wages) and wheels I could do more for farmers and my general farming experienced broadened further - ploughing, milking cows - anything to make a crust
At 19 I decided to go to college - Bicton... to do an OND in Agric because I wanted to be a farm manager
However when I got there, I soon realised to be a farmer you needed loads of money and capital, so decided to focus on the trades associated with farming to earn a decent living, so I decided to forgo farm jobs for the sandwich year in 1984, to concentrate on work experience in the allied agriculture trades - like feed/seed/machinery and when we went for those jobs, they had evaporated because of milk quotas being introduced - so I had 2 weeks to find a farm job or I was off the course - kapput
So I took a harvest job - carting corn and baling, then a job milking cows over winter and another with a beef herd, for that sandwich year - it was tough and uncertain, but I did it - travelling 50 miles return, each day just to milk cows at 5.30am
After college I got jobs in the feed industry as a rep, then in Agricultural banking and life's been good
When was in my teens and 20's, I worked bloody hard on long days, travelled big distances and worked for a lot less than some of mates in engineering etc
So.............what I'm trying to say is
a) You need wheels, a bike, bicycle or a car
b) You have to be prepared to do anything, even offering to work for nothing just to help out (as a groundie) in this instance, be the gopher
c) Work for low wages and all will happen, IF you have the will to succeed - none of us were handed anything on a plate in the 70's/80's and it's no different now
Good luck, only you know if you can do it