OP, I would say that in every forum you visit, always check if there is a pin message. Make sure to read those pin messages; it would help you too, just as you have already got some threads to help you understand the rules of the forum. Make sure you devote time to reading them and also make corrections when necessary on some topics you create. After creating threads, don't just abandon them; also go through your thread and quote some replies to comments you find useful for yourself.
Recently, there have been some threads popping up from newbies trying to express their mind that they are not happy to receive some sort of criticism as a way of correcting them when they are wrong. I want you not to get angry or not accept correction, even if it comes as a slap in the face to you. Always know that on the internet, freedom of speech is greatly exercised.