Hey Roger,
I'm new too, about a week of SH3 so far! I was never interested in u-boats or naval warfare until watching Das Boot, and then promptly got SH3. GWX is great
; there are other supermods too, I'll get to them in time but I figured that starting off with the most popular one would be best.
The only other 'essential' mods I have found to be are GUI mods (mostly if you're using manual targeting) - I like ACM-GUI Reloaded - h.sie's edition - and the 'no continuous 'ship spotted'' mod which I find to be very helpful.
Already I've started reading all I can find on my bookshelves about U-boats, and I've ordered three books
Happy hunting