Clicker Training is all about shaping your dog's behaviour. The purpose of the click is you can use it for a more accurate timed 'snapshot'. Imagine the click as a camera shutter, what you want to do is click the second your dog performs the desired behaviour. It's just a quicker way of saying 'good boy' or 'well done' the dog quickly learn to recognise that the click means they have done the right thing and to try something different if the click is not forthcoming.
Well commercial clickers are available, they are cheap and easily replaceable. Personally I have never used one, I have my very own built in clicker I will never lose or leave behind. It's called my tongue, I simply make a clicking noise, simple, effective and if I lose the ability to use it I have an awful lot more to worry about then training my dog.
The first stage in clicker training is called 'Priming the Click' and it couldn't be easier. Take around 30-40 pieces of your dog's kibble. Now just click and reward. You are not looking for any behaviour, just letting the dog know click=reward. Got it? Great!Next Lesson