The rules on my community are displayed upon the front page along with a posting guide which I suggest you read. It is below.

@galenkp/the-weekend-community-a-posting-guide

Also, you should make peace with the fact you'll get downvotes as people in the community exercise their right to upvote or downvote as they see fit. It is a part of the community and you 'll need to get used to it I think. Most people will get downvoted at some stage.