Clicker training beginner

I bought and read Karen's book when I had my previous cat.  He was old and from a rescue centre and had to be kept as an indoor cat because he was the carrier of a virus that could be passed on to other cats.  I did a little bit of training with him, but as I said he was old and he was slow (though utterly, utterly gorgeous too)  He learnt to follow the stick, to shake hands, to sit up and beg.  I don't think he ever understood verbal commands so I tried to do visual ones - though had a problem remembering them myself!  Anyway he very sadly died in April. Then last Friday we got a new kitten.  (I'm not ready yet to take on another old cat - it's too painful still when I have such a short time with them)  So Charlie, the kitten, is about 9 weeks old and I need to find some type of snack that he thinks is delicious and start with some simple training.  He is going to be an indoor cat because I can't have him injured on the road.  I am also in the process of cat-proofing our small garden.  I've found loads of brilliant (American, of course) websites with examples of how people have done this.  Here in England 'we' still think it's cruel to confine a cat - despite the fact that so many are injured on our very, very busy roads.  My cat sitter works at the vet and says it's heartbreaking how many cats injured in this way are brought in.  But no one thinks twice about confining every other type of domestic animal do they?  So why not a cat - as long as you give it enough stimulation I think they should be confined.  Also it's distressing for a driver to hit an animal, it's annoying for the neighbours to have cats digging in their gardens and leaving their little botty presents!  So there we are - I didn't mean to write all this.