I can't help with advice on training etc, but, I have found that presenting oneself to the company you hope to work with early in the day with a clear statement of what you want to do and why does open doors, even if you had already written to them or phoned them. By showing an enthusiasm and a get up and do attitude employers will often give you a chance to prove yourself, even if on trial basis which is then all good experience to take with you.
Good fortune in your endeavour, Rob.