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The first one appears to be a female in the genus Ischnura (Odonata: Coenagrionidae), possibly Ischnura senegalensis, a widespread species that goes by many common names - see http://tinyurl.com/yglrq7z for an image.
The second one appears to be a male neontip/golden dartlet damselfly; Ischnura aurora (Odonata: Coenagrionidae) - see http://tinyurl.com/ykn3kvz for an image.
The third one could be a male Ischnura senegalensis (Odonata: Coenagrionidae), see http://tinyurl.com/ybmw5nm for an image.