RA includes rebuilded campaigns and missions from Sub Command and 688 H/K but sometimes some bugs (hard to detect during redesigning) appears and you can stuck (as me in Sub Command campaign
link)
Of course with little luck it won't happen
Also very good Red Storm Rising campaign (by Bill Nichols) was rebuilded for RA and some of very well knowed single missions.
Problem is: vanilla campaign after RA is almost completly unplayable and old missions (from RSR, SC, 688I) were designed
only for submarines. So if you wanna play Perry, P-3 Orion or MH-60R you have very limited choice.
For me RA is best Dangerous Waters mod and i recommend it. But if you wanna play DW vanilla campaign, you should wait with RA installation. Instead you can install LwAmi 3.11.
After gaining some experience, best choice is to change vanilla/Lwami to RA because changiing RA to vanilla/LwAmi haven't sense - but it's only my personal opinion
Another option is to learn basics in RA and playing with MP sessions. Many players are very experienced and they should help you to understand how to play.
In this case, you can start from "deep water" of DW gaming. MP sessions require a completely "fresh" view of playing DW:
- cooperation with other players
- cooperation with MPA, surface ships,
- being fast and deadly
- hiding in strings of acoustic signatures civilian ships (instead hiding by lowering speed)
- being part in bigger tactical plan etc.