Dear Saraswatimaa
Please open any thread, See at the bottom of the thread, there is a post your comments box will be available. below the comments box please click on the Blue box Start New Topic and you can select the appropriate subject in which your thread is related and click on the related, and start new topic/share files/formats then you can type your subject heading and ask your querry, share the knowledge and article you have of your own.
To attach any file click the Manage Attachments and attach the files.
You can change the script size, colour with the help of the tool bar available in the Message Box.
Please do not upload any Copyrighted materials, which will be problem for you as well as the forum.
All the best and Happy learnings