This is a torrent I've been seeding for a while, it's pretty good.
Torrent description:
A collection of books that pertain to socialist/worker's-movement theory, history, movements or figures, with a focus on more recent works that aren't often available on public-domain archives. Not every book is explicitly socialist in outlook; there are a handful of books in here that just relate to important developments in history that might be interesting to a socialist (for example, King Leopold's Ghost, a study of the horrors of Belgian colonialism in the Congo Free State, or Judith Butler's Undoing Gender.)
A mixed bag of formats; EPUB and MOBI when possible, PDF otherwise, with some HTML, TXT and DOC mixed in when totally unavoidable.
I've been using AirVPN for seven years with few problems. I'd recommend waiting for one of their big sales (Halloween, Black Friday, Christmas, anniversary sale) to buy a two or three year plan.