What is chopin's easiest nocturne?

I have been playing piano for 1 year now (at the start, practice was very slow, didnt learnt sheet music at the first 8 months and only played synthesia games and movie/anime soundtrack). After learning moonlight sonata from synthesia, it really put me into classical music and now i always listen to it. My favorite composer is chopin by far and his nocturnes. I have already learnt 3 of his op 28 preludes, canon in D by lee galloway and now im working on schubert's serenade. I really wanna learn my first nocturne and i think i can get through it. But i wanna know the easiest one to start. (Keep in mind i have a only 61 keys keyboard bc i was dumb and bought a cheap one not knowing the problem with keys and can't get other).