Thank you all so much for this community, I keep browsing it and finding great new stories :-*
I read a great fic maybe half a year ago that I was sure I had bookmarked on AO3, but I can't find it anymore? Basically Dean was working and trying to go through college/university at the same time while also taking care of Sam (John is in the picture, but pretty useless). Castiel is his professor and he accomodates Dean by letting him miss the usual class and meeting in private instead, so he can graduate on time, because between work and taking Sam to school he can't make class. At some point their house burns down (probably John's fault) and they move in with Castiel, who has a house big enough for Dean to live in his basement. I'm pretty sure the name was something like 200 things or 300 things because Sam makes a list of stuff Dean likes so Castiel can woo him, but he was already doing most of it on his own. It was such a sweet story.
Does anything ring a bell? I really enjoyed the writing and it was pretty long I think (always a plus ;) ). I would also love any recommendation of fics that feature Dean taking care of Sam (as a brother, not a big fan of Wincest). Thank you in advance!!
Edit: I found it on http://destielfanfic.com/post/30521725578/300-things yesterday night and it's also been found in the comments so THANK YOU to everybody!