(Original post by cberry)
It's notoriously hard to break into this kind of work. You can contact your local CAMHS and just say what you've said above really, that you are really enthusiastic and motivated and have some time to volunteer and would be happy to volunteer with them in any way possible. I'm not sure how likely it is that they will take you on without practical experience first.
Other places that I would suggest to try and volunteer would be-
-young person's centres (normally one or two in large towns)
-eating disorder/mental health support groups or charitable organisations
-unemployed families centres
-learning disability charities
You could also try looking for classroom/teaching support jobs, nursing assistant or healthcare assistant jobs but more experience may be necessary.
Try to find out if your local area has a volunteer bureau or something like that, where they have a centralised list of voluntary opportunities that you can look through.