New Threads.... Click on the top left corner main picture logo for the site to take you to the main menu. Scroll down to the category that is most suitable..eg...Freshwater..... Plants..... etc. Basically find the topic in that menu that best describes your question/topic. Drill right down into the subject. When you get to the last menu where everyone has posted their own threads on a similar subject as yours, look up the left side of the your page, scroll up till you see the button that says.... "Start New Thread" Click and compose and post. Good Luck.