What is main points of The Things Fall Apart?

The novel is the story of Okonkwo's tragedy, but it is also a record of Igbo life before the coming of the white man. The novel documents what the white man destroyed. The reader learns much about Igbo customs and traditions; depicting this world is a central part of the novel.

For a detailed look at the novel's themes follow the direct link provided below.

http://www.gradesaver.com/things-fall-apart/study-guide/major-themes/