as a former agility instructor and competitor
take the classes - you will find out if your dog can perform on the equipment and if you want to do the work required to succeed
you can't afford to purchase or build the equipment needed
and if the classes are any good you don't need to have all of it at home
but here is my disclaimer
I've taken classes from people that didn't have a clue and from world class competitor/teachers
there is a huge difference
plus you need to find a class that suits you and your dog, I couldn't succeed with a very athletic type training style - I'm not athletic :roll: but my dog was very fast so I had to learn how to handle the speed and ability my dog had to the best of my ability
what I'd suggest is - attend some trials - find a competitor or two that intrigues you and might be of similiar athletic ability to you. When they are just sitting around talking ask them who they would recommend for a class in your area
Pick your time - you don't want to interrupt them getting ready to compete but I will guarantee that they will either give you the info or tell you who you need to talk to - to find out...
then go and visit the classes - talk to the instructor and class members - ask if they are the only instructor and if not, who is the other instructor(s) - I was training director at our club and sometimes the club member teaching wasn't always someone that I directed a friend to ;-)