A hello to all you submarine captains out here!!

My cousin gave this game on account that "It's not my thing" (he said) so i was glad to take it off his hands after seeing some nice presentations about it. I haven't played a submarine simulator before, only airplane or racing simulators and i must say that it;s not what i expected.....IT'S WAY BEYOND

. I mean at first i hesitated because i thought that it would be just another game with a thousand gauges and buttons and so on, that would take me ages to familiarize with. But instead i found an easy interface to work with and the feeling....omg....and the graphics.....so many good things that i don;t know with what to start.
So i should get to the point before i get too carried away.

I see lots of mentions about these mods and all their interesting features, but the thing is that i haven;t used a mod before. And i was wondering if someone could please point me to the exact mods that i need to install (keep in mind that i'm a complete newb at this game but i like it A LOT and really want to learn it by the book

) but nothing too fancy or complex, something that a new comer can handle.
And another request if i may

If anyone has an extra signature that they could spare i would really appreciate it.
Thanks in advance.