help with deciding on dog training ? Agility or what?

deadbirdfinder

Well i have 2 yr old shepard, chow , collie mix. So he's big, smart, athletic and easily bored. I feel i need to give him a task or a challenge but living in the suburbs their is a shortage of herds to wrangle. so i was wondering about getting him into agility training or something like it , but have no clue as to where or how to start. If anyone has some tips, sites, or suggestions on similar things that would be great.