Start reading what is the topic all about. And if you are a good commentor. Comment on the thread base on the topic so it will be a quality statement by the thread. Also you need some knowledge in english language to avoid wrong grammar. Reading your statement also is needed to avoid wrong spelling. I mean check your statement before you post.
Thank you. It is helpful.
Also when your done writing your post look for red underlines and it will help correct most grammar and spelling mistakes people make.