As Christians, we are called to engage the culture, not retreat from it. In order to do this effectively (and winsomely, avoiding spiritual weirdness), we need to understand how to develop a Christian worldview.
Philip Graham Ryken’s booklet What is the Christian Worldview is the best short read on how to do this. It outlines the four basic components of the Christian worldview—creation, fall, redemption, and restoration—and shows how they apply to every area of life.
This book gives a good basis for understanding the framework for thinking Christianly about anything, so that you can then apply the framework to your own specific callings.