Welcome and I hope you enjoy Sh5 modded
With respect to my friend Sober, I disagree with his view that all you need to know is in the first few posts of his threads. I am working on documentation to help folk like you and I have been doing so for some weeks. I hope to publish soon.
In the meantime "silentotto" is a cheat code used to reveal all the campaigns without having to go through them
I recommend you dont start with Sobers mod list. In particular, not using real navigation for a new captain. You can use Sobers as a guide and remove the harder stuff like real navigation and his underwater fx and keep with enable external view etcetc. I dont use real navigation and I use auto TDC and no torp failures even though I could enable all those things for me I like "fun" rather than 100% realism. Maybe next campaign I will do 100% realism but for now I like my auto tdc and super magic GPS in the 1940s and having the super magix external view
Its a truly great game so stick with it, learn up, its well worth the effort to learn it
Some basics would be:
1. Generic patcher to fix hydro and many other things
2. REM
3. OH II
4. Dynamic Environment
5. Steel Vikings interiour
6. IRAI
7. EUF
8. Sjizzles charts
9. New UIs
In no time youll be an addict