HoMM IV Reference Guide.

The most comprehensive guide I've seen. I learned quite a few new things about minor details, even though I naively thought that there was nothing new to learn in the fourth installment. However, there is quite a bit of unnecessary information that can be obtained directly from the game – descriptions of creatures, artifacts, and skills. The sections on morality and formations seemed the most useful. For example, I was surprised to learn that slot 6 is the safest when using a free formation. Perhaps this is because I usually use a square formation, where the maximum safety is in slots 4 and 7. A free formation makes sense to use quite rarely. I was surprised that different artifacts with the same effect on the army (for example, a cross and a mug that give +1 and +3 morale, respectively) only have the maximum effect on different heroes. I never paid attention to this, although intuitively, I usually try to give artifacts with similar effects to one hero. The most interesting thing in the guide for me is the last table on the order of skill upgrades; I probably just didn't understand how to use it. Is this a recommended order for upgrading certain skills from the point of view of maximum usefulness in the game? I noticed some minor inaccuracies. The external and city stables are different things, but only the city stable (+5 for 7 days) is mentioned. Meanwhile, the external stable gives +5 only for 1 day. There are also some questionable recommendations. For example, it says that it makes sense to take a Rogue only on large maps. He's great everywhere. The Rogue is the first hero I buy in addition to the main mage (if possible). Because this hero levels up into a Runner very quickly (3-5), and a Runner is always needed. After leveling up the Runner, we send him into Combat+Range and get a powerful archer. And seeing the exact number of troops in the enemy army is very useful. In general, the guide is very comprehensive. But the topic of hero combinations and their development, depending on the castle, is even more interesting. Who to take first, who to take later, and who not to take at all. For example, when playing as the Undead, I develop the Necromancer + Runner (and archer later) + Warrior + Order Mage combination. Are there any interesting manuals on this topic?