there are... at least four major things that i think you should ideally not know until they happen. obviously everything else is a bonus :)

btw, if you are looking at my previous posts... they are all full of spoilers, but particularly: DONT look at the colouring book post. praedestinato thought it would be ok to look at it without having finished the series, because it was just a colouring book and probably wouldn't have any massive spoilers in it... but it has the most massive of all spoilers in it.