they are basically like writing a rich text email.
Almost the same thing
just check out and play with the various icons.no harm done.You can't hurt anything here.Trust me,that's my job lol

if you are really not sure you will mess anything up use the Archive forum for a test.

Last but not least-the smilies(aka emoticons).Just click the image and they end up in your comments.

DON'T BE AFRAID.You really can't hurt a thing here.And if you still have questions one of us will be more than glad to help out.