I settled down to watch this a few years ago, I'd alwasy felt it was a vast gap in my film knowledge and everyone raved about it. I liked several other thing done by Orson Welles so I thought there would be no problem and that I would be swept along and as amazed as everyone else.
I found it to be a bloated, overlong, self-indulgent, tedious, overhyped, overrated mess of a film. I was so bored by the end that I couldn't give a stuff what rosebud was. It always amazes me that it comes out so high up in various polls but I have long suspected that rather than actually liking the film many people say the like it because it is almost a requirement if you 'know' anything about film. You must like Citizen Kane otherwise you are stupid!
Still each to their own I guess, I wouldn't ever watch it again.