There are many ways that you can explore what the Christian faith is about. Here are some we would recommend:
Alpha - an introduction to the Christian faith
Christianity.org.uk - Explaining many aspects of the Christian faith
The Bible Society - Understanding the big story of the Bible
Christianity explored - An introduction to the Christian faith
Life explored - Those curious about life but not ready yet to consider Christianity
Share Jesus International - Easily understandable explanations of all things Christian including Jesus and  Long Story Short