qBittorrent official forums

Is there a guide for bittorrent tweaks and fine tuning?

I'd like to know what the torrent queuing option does. And also the many option in the advanced tab like exchange trackers with other peers, announce all trackers etc.

You can take a look here: http://www.techsupportalert.com/optimizing-qbittorrent-speed. With google you might found other useful sites but if you can't we will help .