Spectacular movie. Personally, I think it is one of my top 3 (I think, my top 1) and possibly Nolan's best creation to date. Watch the movie for what it is - a phenomenal science/space movie with great acting and filmmaking. Don't force yourself to understand the theories behind everything, just enjoy it and immerse yourself in its beauty.
I recommend watching it first before going to IMDb or other review sites so you can have an unaffected blank opinion. My biggest regret is not knowing much about Nolan when this movie came out and thus not having an interest in watching it in IMAX, let alone in the cinema.
If you can, set up your screen in a dark room, highest streaming quality and a comfortable brightness for the best experience. Enjoy!