Originally Posted by Prasinos
I want to know how/when can I start a thread
You can start a new thread whenever you would like.
When you decide on which forum you would like to start a new thread in, at the top (above "threads in this forum") you will see a sprocket that says "New Thread"
Click on that enter the title of your thread and type away.
If I did not explain it clear enough, just ask again.
Here is a pic of the New Thread sprocket.