For the record...... home made olives are the best thing ever and so easy.
You just need to soak them in brine for a while. You change the water about once a week for the first 4 weeks then once they taste right put them in jars with more brine, some vinegar and a layer of olive oil. Adding some herbs when you bottle them is optional.
There are probably a billion recipes on the internet.
If you have a neighbour with an olive tree or you can plant your own or you see them at the market you totally need to make your own.
I'm addicted. They taste so much better than the ones from the shops.