If Jesus said you should not judge others, then why will there be a Judgement Day when God judges all of us, and sends us to Heaven or Hell???
You seem to miss the point...Jesus said "Don't judge others, lest you shall be judged". So, that doesn't mean not to judge others; it means IF you do you will be judged by the same measure.
There are plenty of bible study books at Christian bookstores, or even on the internet. You should get one on the topic you are interested in, bc getting information from someone who is ignorant as you concerning the bible will only confuse you more. It's like the blind leading the blind.