how to pirate music
Ripping from Deezer
Unless you're into relatively obscure stuff, the vast majority of what you want will be on legal streaming sites, so you can just rip from one of those.
Use deemix for download, Freezer for streaming + download.
Peer-to-Peer stuff
Soulseek
P2P network, mostly for music. Most people will ask you to share something before downloading from them, so you should probably do that.
Rutracker
Russian torrent site. Might be slow, but might have something you can't get anywhere else.
how to into torrents
General Knowledge
What formats there are
FLAC is generally the one you want.