The document discusses different types of speeches according to delivery method. It identifies four main types:
1) Extemporaneous speaking - speaking with limited preparation using notes as a guide in a conversational style. This is the most popular type.
2) Impromptu speaking - speaking without advanced preparation in an unrehearsed and conversational style.
3) Manuscript speaking - speaking from advanced preparation by reading a written speech aloud.
4) Memorized speaking - speaking from advanced preparation by reciting a written speech from memory word-for-word.