It’s worth mentioning that the new Charity Entrepreneuship book How to Launch a High-Impact Nonprofit does go into some of the “concrete issues” questions you’re asking. Particularly, the one on legal structure receives very good treatment (though somewhat lacking for non-US/UK orgs). They also go in some depth into media/website/aesthetics.
It’s worth mentioning that the new Charity Entrepreneuship book How to Launch a High-Impact Nonprofit does go into some of the “concrete issues” questions you’re asking. Particularly, the one on legal structure receives very good treatment (though somewhat lacking for non-US/UK orgs). They also go in some depth into media/website/aesthetics.