In the Torrent Details tab there is a bar that indicates blue and green chunks. I suppose that the green chunks are the ones I already have.
What do the blue chunks mean?
Also, in the Peers tab, at the bottom, there is some type of availability factor/number. What does that mean?
Blue chunks are pieces that are available from other peers on the swarm, the availabiliti ratio indicates the amount of full copies of the content that are available on the swarm (3.0 means there’s at least 3 copies of all the chunks for that torrent across all the peers on the swarm)