Thanks for the replies! Yes, it doesn't seem to be too difficult. The plan is to start with apples and European plums.
I'll buy some dwarfing root stocks (because of the birds and possums), graft most of them and put some aside to grow more, either in pots or in the ground, both shown at youtube.
I think stone fruit and citrus is more difficult as well as it's done in summer when you're busy anyway.
If I graft Apples and plums in late winter, say end of August and we won't get colder than one or two below freezing could I put the trees outside right away? Maybe with an old curtain at night or under a tree??