great links there! I'll have to review them all in detail.
http://www.subsim.com/radioroom/showthread.php?t=88961
This guide helped me a LOT, considering how simple and short it is. Then
http://www.paulwasserman.net/SHIII/
seems very interesting too, I am starting to read the manual charting while moving part right now. Im still a newbie at naval sims, but I am guessing that getting a shot at a ship in decent conditions takes way more time than I am used to (thats what you get when you play a lot of quake-style FPS), with all the data gathering, course plotting and torpedo calculations.
Anyways, I think the joy of hearing the "torpedo impact" message and watching the ship sink through the UZO/periscope is priceless when you know YOU did all the job