Easy Backgrounds

FIRST, change your blog template to minima
Click on Customize
Under Layout, click on Edit HTML
Scroll down and find:

body {background:$bgcolor;margin:0;color:$textcolor;font:x-small Georgia Serif;font-size/* */:/**/small;font-size: /**/small;text-align: center;

Change that whole part to say this

body {background:$bgcolor;background-image:url(direct link);background-position: center; background-repeat:no-repeat; background-attachment: fixed; margin:0; color:$textcolor; font:x-small Georgia Serif; font-size/* */:/**/small; font-size: /**/small; text-align: center;

Find the background picture you want below. Copy the link and paste it between the parenthesis above where it says (direct link). Now you should have your background you want without losing any widgets.