Interesting

-Ideas about why Agatha wrote like she did.

During World War 1 she worked as a pharmacist, a job that also influenced her work: many of the murders in her books are carried out with Poison.

In December 1926 she disappeared for eleven days, causing quite a storm in the press. Her car was found abandoned in a chalk pit. She was eventually found staying at a hotel in Harrogate, where she claimed to have suffered amnesia due to a nervous breakdown following the death of her mother and troubles in her first marriage. Opinions are still divided as to whether this was a publicity or not. A 1927 film, Agatha, starring Vanessa Redgave as Christie, recounted a fictionalised version of the disappearance.

-Agatha and her Travel.

In 1930, Christie married Sir Max Mallowan, a British archeologist, and her travels with him contributed background to several of her novels set in the Middle East. Other novels were set in Torquay,Devon, where she was born. Famous characters include Hercule Poirot and Miss Jane Marple. 

-Breaking Records.

Her stage play The Mouse Trap holds the record for the longest run ever in London, opening at the Ambassadors Theatre on November 25, 1952 and as of 2005 still running after more than 20,000 performances.

-An Interview with Agatha.

here is an Interview with Agatha where she talks about her education and how she grew up, also about how she writes.

http://www.bbc.co.uk/archive/agatha_christie/12503.shtml