1. Anne of Green Gables (1908)
2. Anne of Avonlea (1909)
3. Anne of the Island (1915)
4. Anne's House of Dreams (1917)
5. Anne of Ingleside (1939)
6. Rainbow Valley (1919)
7. Rilla of Ingleside (1921)
These are the seven original books in the series. However, there are several other related novels written by Montgomery that can be read after these, if you wish to continue the story:
* The Story Girl (1911) - This book is set in the same fictional world as Anne, featuring a different protagonist, but it's considered a prequel to Anne of Green Gables.
* Chronicles of Avonlea (1912) - A collection of short stories featuring characters from Anne of Green Gables and The Story Girl.
* The Golden Road (1926) - A collection of short stories about Anne and her family.
It's generally recommended to read the seven main books in the order listed above. You can then choose to explore the other related novels as you please.