Search the Forums BEFORE making a new post.

9 times out of 10, your to-be question was already answered in much detail in another post.

Take some time to search about your problem using various keywords, and seeing if the solutions and information given in previous posts work for you.

Note that you should not comment on other posts in order to 'upvote' an answer as being relevant, or to add on that you also have the same experience.
If someone's comment helped you, react to the post by clicking the small heart icon at the bottom-right of the comment(while logged-in).

If you're fairly confident your question is something that hasn't been asked before or no solution works, then and only then you should consider making a new post.