Christianity is often included together with the other "World Religions", but in reality it is not a "religion" in the strict sense. A religion is a certain way of acknowledging and worshipping the "Higher Power" that people believe in. Their goal is usually to prove to this "god" that they love him/her or it. Some religions have many so-called gods, or goddesses, while others have only One God. The followers of Mohamed, for example call their religion "Islam", and their "Holy Book" is called the "Koran", and their god is called Allah. And most other religions have their own Holy Books, and are founded by some person that is the center of their worship. On the other hand the followers of Jesus understand our "Religion" to be a "Relationship" with the one true Creator God, through His Son Jesus Christ. The name Christian comes from His name, and means a "Christ-In", or in other words someone who has received Jesus as their Savior. Jesus is the only religious founder who was dead, but rose again from the dead, and lives now forever with His Father God in heaven.
We have a "Holy Book" called the "Bible", that explains all about our universe, and what God expects of us as inhabitants of this planet earth. He knew we would need a manual to instruct us in spiritual things, so He chose certain men and women, and inspired them by His Holy Spirit to write 66 books over a period of time, which make up our Bible. It gives the answer to all of our questions, about creation, where evil came from, what is sin, and how can we be free from it, is there life after death etc? These are questions that we all need to have reliable answers for, and God's Word, the Holy Bible, has answers to every one!
We all need a Savior from sin, and Jesus came from heaven over 2000 years ago, He was the Son of God, but by the miracle of the "Virgin Birth", He became a human being, lived a completely "sinless" life, and died on the Cross of Calvary to pay the penalty for our sins. All we have to do is repent of our sins, ask God to forgive us for our sins, and receive Jesus as our own personal Savior. We are then "born again", and are taken by God into "His Forever Family". So belief in what Jesus did for us on the cross is our doorway into a "Relationship with God"! That's much better than any form of "Religion", I believe.