I would find this useful. It sucks about feminine names although I am unsurprised, given the historical "importance" of women. I especially found the intro useful. I barely know a thing other than the word "Latvian" so having a context and a map is something I need. It'll help the next time someone tells me that they "don't want to be quite German but they are not sure what they are because their persona comes from..." I'll be able to have a suggestion for them.