What preparations should I make before going to church?

If you haven't been there before, or you are a Taoist friend who is preparing a letter (or reading it first), then you can go with a searching heart, but in order to respect God, you should pay attention to your clothes. If you are a believer, you should prepare the Bible and poetry collection before you go (it depends, some churches are prepared). The most important thing is to prepare your mind to receive God's message.