A THREAD FOR NEWCOMERS!

Question: tell me about army distribution in the hero's slots. How are units positioned in a regular fight? How are they positioned in a crypt (conservatory) fight? What does the positioning affect? Also, please explain who should be split and why? How exactly is the queue distributed? If two units have a speed of 5, who moves first? What does speed 5(6) mean? How can losses be minimized? I'm asking all this because I suspect that the arrangement might influence these things in some way, and it certainly affects the outcome of the battle. The more detailed the answer, the better; ideally, I'd like to read theory for half a day

Version - HotA HD, without HW plugin