Hey, HoI2 Manual is excellent!(though written somehat small). But I unfiortunately share your opinion about those of EU2, HoI, CK & Vicky..... The first 2 ones being plain false, the third one "good reference card, but where's the manual?", & the fourth one simply unreadable!

No idea about what Diplomacy can give as a result. Can be a blast, or an utter failure.