Here are some links to various tuning guides:
Class Rules; http://www.470.org/content.asp?id=570
Tuning Guides, Rigging Layout on 470 International http://www.470.org/content.asp?id=621
http://www.northsails.co.jp/products...ng_guide_e.pdf
http://www.northsails.co.jp/products...f/ttN9L5_e.pdf
http://www.olisails.it/en/od_470_tuning.php
http://www.ullmansailssandiego.com/ullman-470-rig-sail-tuning-guides.php
Here are some interesting training videos;
Class Rules; http://www.470.org/content.asp?id=570
Tuning Guides, Rigging Layout on 470 International http://www.470.org/content.asp?id=621
http://www.northsails.co.jp/products...ng_guide_e.pdf
http://www.northsails.co.jp/products...f/ttN9L5_e.pdf
http://www.olisails.it/en/od_470_tuning.php
http://www.ullmansailssandiego.com/ullman-470-rig-sail-tuning-guides.php
Here are some interesting training videos;