These are a few classes I wrote to make columns a little bit easier. I tried my hand and making my own CSS helper classes and I think it worked out pretty well.
<div id="main" class="column right two_thirds">
<div id="left_bar" class="column left third">
<p>im a bar</p>
Other people have made much more comprehensive (and better) column systems, but I did enjoy making my own. I highly suggest checking out Columnal for a more fleshed out and proven column experience.