Kierkegaard , Soren

Soren Aaby Kierkegaard was born in Copenhagen in 1813, he, the youngest of seven children. He died in November 1855. In the early twentieth century his work enjoyed increase acclaim and he has done much to inspire both modern Protestant Theology and existentialism.
I have a few books on my shelves about him or his work. 
The Humour of Kierkegaard is not the best place to start researching Kierkegaard but it is a good book and fun in a heavy sense.
For a more beginner book try.