I heard back from the designer on these questions and here are the answers:
A) Does a player place a man on the initial tiles placed during setup and move on the investment track (or just place two men as the case may be)? This seems to be the case with the revised rules stating that all normal placement options apply to those first tiles.
The initial tile placed in the set-up for each player works like all other tiles when they are placed except for the two restrictions mentioned in the set-up instructions. So you do place a man, and/or move on the guild influence track as the case may be.
B) There seems to be a problem with the scoring example in the revised rules. That example has 5 buildings, 2 markets and a minstrel house. For each building present at least one man is also placed. The example states that blue placed the last building and placed 2 men. So that means there should be 6 men present, right, which is what the example shows? BUT the rules also state that when placing a minstrel house the player gets to add a single man, to the house placed I'm assuming but that isn't stated. So the minstrel house should also have a man on it. So now the question is, does that minstrel house count as a building when calculating block control? I'm guessing that 'buildings' refers to actual guild buildings (not markets as the rules clearly say). The special tiles (tavern and minstrel house) wouldn't count as buildings. Is this correct? The man on the minstrel house would count for determining the tie breaker for block control however. Is that correct?
I missed one word in the description of the minstrel house and that word was 'may'. You may place a man on the minstrel house when you place it but unlike the guild buildings it is not required. Also like the guild buildings, if you have no men left then you can still place a minstrel house. For determining block control the minstrel house does count when adding up buildings unless of course it doesn't have a man on it. Basically, any building with a man on it counts toward a players total within a block.