You can open new threads to discuss any relevant topic and reply to existing threads in the 'Quick Reply' box.
make your questions clear so that we may get the exact results which can help you for improving your site ,this is a forum where we need to be friendly and help each other , thread helps in getting unique and good content as well as effective in gaining decent traffic.
If you need information on a particular topic or need help you can just browse down to the appropriate category and then click on the new thread link and put your problem or question. That will make it sure that you don't get banned by posting in the wrong section.