Please help

Ok

I have now played around with wordpress for a week now, it’s great but when it comes to personalising, I am lost.

http://www.cosmetics-savings.com

The theme was originally 3 columns.
I tried to get rid of the left sidebar by modifying the page template but instead I got the right sidebar to move to the bottom of the pages.

I also face the problem in the same sidebar that whatever widget I have does not want to display its title.

I also would like to change the post’s (middle bit) background colours to some off white instead of black. I did try and look for the right background marker in the CSS code but it is always written differently to what people have been putting on here.

I also do understand there is a possibility to make static pages in the future, but if I cannot make these “simple” things work, what is the point?

Thank you for reading. I welcome any comment.