Where to start with reading Peter Sloterdijk? – my reading guide has been updated with recent translations from Polity.
I’d still suggest beginning with either You Must Change Your Life or In the World Interior of Capital, depending on whether you are most interested in philosophy of the self or philosophy of the world. I’ve not kept up on his more recent works, but I’ve tried to add in links to all the translations – let me know if I’ve missed any.