i have just recently (3 months ago) gotten in to harry potter and have never had to wait for the any of the books or the movies.
I find it so fun! What im looking foward to in the movie is the scene when Dumbledore escapes from the minister and umbridge - that is going to be awesome! and the fight scene between him and voldemort. and the hall of prophices scene.
In the book: there are far too many things.
who lives, what are the horcruxes, the 2 way mirror, what is harry's scar - really, the letters from dumbledore to petunia, if ginny and harry will get together, i think ron is going to die sacrificing himself for harry so i dont think him and hermonie will be together but u never know, if hagrid will die, what is behind that vail, what all did dumbledore do to protect harry, what snape and dumbledore were talking about, if the ministery will help or make the situation worse, will the trio go back to school, what about newts... i could go on all day!!!!!