If you know nothing about music, I should imagine it would be quite hard. Even the drums aren't easy to learn to grade 3 standard within a year if you have had no prior musical knowledge (not saying that the drums are easy, but it doesn't require learning how to read notes, so makes it a little easier than melodic instruments... unless we are talking about the steelpan or suchlike [OK I digress]).
Anyway, learning an instrument shouldn't be based on how easy it is. You should learn it because you love it. That is the only way to be proficient in it.