Kyleigh is spot on. Best way is to buy your own racer and have someone train it. All good and well to get the hands on experience but i feel theres stacks more incentive if you actually own a dog. Plenty of trainers in SA who should help out.

Its not the training thats the hard part of dogs, theres just a million more things to em which makes the over all job tough. But #1 rule is your concern must always be for the wellbeing and safety of the dog. So best thing is to get experience, as once u have the general knowledge you should be able to go from there and with confidence.