Dear Hardeep, please click on the Recent Post you will find on the right-hand side (middle) labeled "Complete List of Forums" in black, underlined letters. Click on that "Complete List of Forums." In that screen, select the concerned Category and continue with Forum details. Click on the concerned forum. Then, in the opened window, there will be two options available on the top left side: "Start New Topic" and "Share Files & Formats." If you click on the appropriate box, the discussion/comments box will open. Here, you can type the headings and further type the contents of the subject/query/question, whatever you feel. Then click on "Submit New Thread." There ends your posting of new threads.
In a shorter way, you can open any thread from the Recent Posts link. At the bottom of the discussion/comments box for that thread, you can find a blue box labeled "Start New Topic." If you click it, it will take you to complete forum details, and from there, you can do all the new posts.
Please try and confirm, friends.
If you still face some problem, never hesitate to call me on [Phone Number Removed For Privacy Reasons] while you are in the system.
All the best.