I agree with H. A forum like this should be all about sharing things, whether it's your latest modelling or painting experience, or help and guidance on all aspects of the hobby. Most of us like to do different things. The ability to research well is a talent - most people can gather piles of information - but analysing it and drawing the correct conclusions is something else, and finding pearls of wisdom in foreign publications might necessitate language skills that not all of us have.
No-one is obliged to share their knowledge, but equally no-one should be criticised for asking, even mildly.
There are not many good books on TYW army organisation and some older ones are hard to get and expensive. And not every gamer is able to read German.
Reference works can be very expensive, for some time I wanted a two volume one about RN swords, normally offered at 300 - 400 £! At an auction at Landshut a set sold this year for 350 € + VAT. Absurd. I got a set last month at 155 €, still a crazy price for a set that was sold new at 8 £in 1970 but I was very happy.
For the beginner it's hard to find the basic informations and army lists are needed to build a gaming force. And if the researcher and writer can publish them in a supplement and earn some money...... Perfect for all.
I've got some good accounts of how the Swedish brigade operated on the battlefield (at least in theory) written by people who saw it in operation. I've also got a first hand account of Lutzen, but can't remember how much info it may contain about units - I think the OOB is probably pretty well covered by the very good Osprey campaign volume on this action, it appears well researched. I've also got some material that shows the battleplans for several Dutch/Spanish actions, it should be possible to derrive army lists from these.
Boy, it sure would be nice if we had some grenades, don't you think?