Identify the Plot Twists in the Novel "Great Expectations"

The three basic plot twists in the novel Great Expectations grip the reader's attention and add impact to the moral themes of the story.
The major twists help divide the story into three parts, known in the novel as: The stages of Pip's great expectations.
The first twist appears when the young, ambitious orphan Pip, finds out that he has a secret benefactor; his dreams of becoming a gentleman are about to come true. Pip is certain that his benefactor is the eccentric, old lady from Satis House, Miss Haversham. He believes that he is going to be trained as a gentleman, and as the future husband of Estella; Miss Haversham's beautiful adopted daughter.
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