Metatrader Tutorials?

I figured out how to buy but I cant figure out how to sell, does someone have a step by step instructions on selling, what to click on what not to click on.

I looked in the help but dont see anything on selling.

My profits was up to 900 bux and I wanted to sell but it didnt happen.

Thanks in advance.

right click button over the order; select close order; click on the yellow button (close order).