Need help with wordpress sections

Hey guys

I need a little help about wordpress,
I have website http://www.ravenor.net

I want to add a picture on the left, to add a download button and at the top of the download button to be brief description.
I have tried to do that but it didn’t worked. So I need to know how to make columns and then to add the pictures.

I have designed what I want to do in the following link
http://img233.imageshack.us/img233/2019/23915502.jpg

If I need to play with CSS please write me the codes that I need to enter and where exactly ? There are tons of .PHP files -.-

Thank you in advance