" Cold Comfort Farm " by Stella Gibbons. An upperclass young woman is left on her own, obliged to go to live with her earthy relatives on their farm. Her attempts to civilise them are hilarious, and, eventually, mostly successful. Or "Three men in a boat ", by Jerome K Jerome, for lots of laughs. Three friends take a boat up the Thames, and get into all sorts of trouble.
But don't read "two brothers" as mentioned above. It is dreadful, the plot is nonsense, the characters change in the most unlikely way, and as well as that, it's Far Far too long.