Whenever someone asks me to name my favourite books, Anne of Green Gables always is on top of the list.
Mainly because it is one of the first non-picture books I remember reading by myself, and not being read by my parents. But also because the story is riveting. Anne is a great character to grow along with, and the friends she makes is wonderfully described.
I recommend the whole series, but it is really the first book in the series that captivated me into the universe of Anne and Gilbert.