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To my knowledge no, and if Grizz is going to do official guides they would probably come afterwards like inbetween password and its sequal. That would give him some free time to do guides and any extra polish that he wanted to do. But that would be up to Grizz.

Not really. But if you search around reddit and other sites you should find most of your answers. Also, if you want to know what each choice does to the future dialogue you can go into settings and make sure you do not skip unseen text (it should be this way by default). Then you just go back to the last dialogue and skip what you can and read the rest. That's what I did but I had to wipe all the saves from %appdata% so its fresh and the game doesnt know what text you read. Just keep in mind that doing that is like a reformatting. Youll have to re read everything all over again  unless you remembered your chocies and enabled skip unseen text.

As for the talk with Hamond where you can ask him any question, whatever you ask him wont have an impact on the game, and I do believe Grizz has not programmed in any text that will give us clues or confirm our own suspicions of what is going on. So over all, youre not missing much.