I try to know as little as possible when I watch a film. Normally, I will want to know somethings so I can tell if I want to watch it. My wife wanted to watch this and we went, me not knowing anything about the film.
I enjoyed it. I would not say I loved it, this being more comedy rather than spy film. I you are watching it expecting a film like Kick-Ass, you will be disappointed, but if you are after something like The Kingsman, then this is a film for you to watch.
Would I watch it again? No. But it was nice watching it with my wife. And I would watch any sequels.