Hey man welcome to the forum. If you want to post a new thread there is an icon at the top left of the forum that is in black and says "new thread". That's how you post a new question or concern on the forum. If you're reading a current thread and wish to reply to it, there should be a "quick reply" box at the bottom of the page. There you can type your message and it will show up on the thread. That's all there is to it! There are some very knowledgeable people on here and can help you out significantly. Don't be afraid to ask questions, as we're all here to help!