Please do not let people who know nothing or are very biased about Mormons and their faith teach you what it is or isn't. There are many people biased towards the church. So be careful who and where you get your information from, And do not let your final decision on joining or not be influenced by biased opinions. You should read and study the Book of Mormon and church websites on your own to form your own opinion on it. After that, attend a few church services. Get to know what it's like to be Mormon and part of their community. If it still feels right for you, then it is time to meet up with some missionaries. These steps will give you a good and non-biased vision on whether you actually want to be a Mormon or not.