What can I say? This is my all time favorite Harry Potter book! (Probably my all time favorite book-book that isn't a classic even though it kinda is, right?) 
 And funnily enough Order has always been my favorite, ever since I discovered as a 11 year old that my (German) copy of it had over 1000 pages (1024 pages to be exact :D) and I felt sooooooo accomplished by reading a book with over 1000 pages and "getting" it and loving it. 
 The reason why Order is so precious to me is because in this one I got the best examination of Hogwarts as a school and how deep the bond between students, students and teachers and their sense of belonging to the Wizarding Comunity is. In my opinion the real villain in this wasn't Lord Voldermort but Dolores Umbridge. I loved that she was a threat INSIDE OF HOGWARTS and therefore made the students feel afraid and uncomfortable within bounds that used to be the most safest and comforting. I loved how the whole school united to take her down (except for some Slytherins... but oh well JKR really needed to keep that stereotype right? smh). I laughed tears when we got to the scene in which Umbridge is punishing Harry constantly because he did the Quibbler interview about how the Dark Lord is returning and Fudge is telling lies. And all the other teachers want to show Harry their support and so Madame Sprout awards Gryffindor 20 points because HARRY PASSED HER A FUCKING WATERING CAN or Flitwick secretly slips him sweets after his lessons and Trewlaney "sees in the future" that Harry would live "to ripe old age and become Minister for Magic". I couldn't man, it was sooooo fucking perfect. It made me furiously happy. 
 I also really loved the way Luna was introduced and what she brought to the story. Because she is kind of an outcast and a nutter but at the same time she is portrayed in such a way that you as a reader really get to see how clever and right she is about things. And her loyalty to Harry gets me every time. That she actually flew with the crew to the Ministry of Magic is just a crazy act of bravery (because she literally only got to know Harry & Co. half a year ago)... this girl, man, I love her so much. 
 A lot of people think that Order is the worst in the series because "Harry is so moody in this one". To people who firmly believe that all I can say is: FUCK YOU. Well that is a little harsh but I have so much compassion when it comes to Harry. I feel so much protectiveness and I hate it when people give him shit. Harry fucking Potter was abused since he was a toddler in the most nastiest way by his uncle, aunt and cousin and he fucking remained a good person and didn't turn bitter or all psycho. He is the most humble character that I know and honestly sooo pure and innocent. He is used as a chess piece by Dumbledore but is still willing to sacrifice himself for the greater good and he is just my little baby and if you're coming for him I WILL FIGHT YOU. Of course he is fucking moody in Order. First and foremost HE IS A FRIGGIN TEENAGER and teenagers ARE MOODY (get over it) and he feels fucking left out because Dumbledore is purposefully leaving him in the dark and he is just confused as fuck. He feels enstranged from his friends (and all the other students from Hogwarts) because the fucking News are reporting about him and what a lying little shit he is DAILY. How do you deal with that? Then we have the little shit Umbridge who is tormenting him more than any other student and if I were Harry I would be just as fucking moody as him. He has every right to be. 
 The whole Sirius situation is also quite tragic. Sirius isn't my favorite character because he is so manipulative and basically causing a deeper drift between Harry and his friends. But on the other hand I understand Sirius' behaviour to the fullest because for him Harry equals James (his best friend he lost in a fucking tragic way; probs still blaming himself for his death) and on top of that he was held captive in Azkaban for 13 friggin' years (thanks for nothing, Dumbledore, you little shit) and his mind was just bound to be fucked because of this. So the whole Sirius situation is rather complex and I feel compassion for him - especislly since Dumbledore (the little shit) forced him to be bound to his old childhood home - a place that only gives him anxiety and which is linked to his darkest memories (I mean can you imagine being exposed to a screaming portrait of the mother who hated you with all her heart). 
 So overall Order had just the perfect mix of funny, tragic, beautiful, witty, depressing and real moments of any of the Harry Potter books and it will forever stay in my heart. 
 Things I forgot to mention but that are golden in this are RON AND HERMIONE BECOMING FUCKING PREFECTS, RON BECOMING A MEMBER OF THE QUIDDITCH TEAM (so proud of him and the whole Weasley is our King-subplot is all I needed in my life), Harry's disastrous date with Cho Chang in Hogsmeadeeee, Dumbledore's freaking Army. I can't deal. SOO MUCH WAS IN HERE AND I COULD CRY!!