I was finally able to play my first game with a friend. We were using core set decks. I have 3 others interested so this is just the start of something that we're all excited about! 
Anyway, like many in this thread I was hoping to post the questions we had and see if folks can help us with clarifications and/or answers. I tried reading many of the threads already here to help with some questions. Please forgive if these have been posted already or are obvious (in the rules or faq). It took us almost 2 hours to play the first game going back and forth trying to remember common terms and such, but the 2nd time was faster and we can already tell we're hooked!
Here goes!
1. What does the infinity symbol at the top left near the titles indicate?
2. T174 Forever Burning - We were surprised when we quickly saw this card was something the owner could use over and over each round (assuming you can pay for getting it back into your hand each time)? Follow up, if you had more then 1 could you use it twice on the same character?
3. L194 The Power of blood - I assume this plot does not protect nobles from being discarded? For Example: T176 Westeros Bleeds. If someone plays the S201 Valar Morghulis plot card are nobles are still protected as long as The Power of Blood is resolved before Valar Morghulis (i.e. player with The Power of blood plot card ends up as first player in the plot phase framework action)?
4. S8 Robb Stark - Does Robb's response come after a military challenge victory requiring the defending opponent to choose and kill a number of his characters in play equal to the claim value on the attacker’s revealed plot card? In other words, does the response to kill an additional character happen before or after the military challenge kill(s)? We assumed after at first, but now I'm not so sure (see below). How does that fit into the player/framework action flowchart?
Responses on a card are still a bit confusing. Or rather I think we are struggling with player actions vs framework actions. If the response is a challenge framework action does the response happen after determining winner, result being implemented, reward for unopposed, or renown? Reading the flow now it makes me wonder if we were wrong and it follows the "determining winner" framework action before "result being implemented" thus making it so the response to kill a character controlled by the losing player is before the military result being implemented that also kills a character(s) of the opponents choice. I hope that makes sense as it's confusing just typing/thinking it out here! Finally, is it a choice of the player to use the response?
5. Can you use a locations ability (example: kneeling to do something, an effect that makes cards costs less to marshall, etc.) the turn it comes into play?
6. B86 Renly's Courtier - How does this "Any Phase" action work against a card like S22 Trident Reinforcements? Specifically, can Renly's Courtier target Trident Reinforcements' printed text during the dominance phase in the dead pile so someone could not return Trident Reinforcements from the dead pile to their hand? Our guess is if the player who has Trident Reinforcements goes first they would be able to bring it into their hand before someone could us Renly's Courtier, but if if the player who has Renly's Courtier goes first then they could use the any phase action to nullify Trident Reinforcements text, but would have to do that and not pass? Follow up to that, can all (or just some maybe) actions be used against an opponents discard and/or dead pile cards?
7. What's the benefit or drawback to placing location cards that allow you to attatch to a House card? (example S28 Lord Eddard's Chambers)
8. At first the House specific keywords were confusing us, and we think we understand it now. At first we believed that when cards said things like "kneel X card to lower the cost of the next --House specific keyword icon-- card you play this phase by X #" it was only for House specific keywords on cards like Ambush, Infamous, Intimidate, Stalwart, Vengeful, & Vigilant. After some game play we now assume reading the cards and seeing them in play that these house specific keyword icons in text on cards can be used for any card that are for/in that specific house?
Appreciate the help!

Thanks for recognizing that so we don't feel as silly for making the mistake. Inititally we definitely had it wrong, but as we started playing we noticed the issue during gameplay and I can see how we misunderstood at first.
) and had a few more questions. I think I know the answers to these, but I wanted to post just to be sure. It's late and I'm trying to get 'em all out before I go to sleep so please forgive if their obvious or don't make sense.