I’ve been consiering bootstrap, but I really want to have a solid css and javascript foundation before I dive into frameworks. I imagine you’ll get a lot more productive as an actual freelancer though.
I started another tumblr theme a few days ago. I’m going to do this with a css column-grid (instead of js masonry), though I still have to use jQuery to get my infinte-scroll plugin working.
Currently barely styled at all, just basic layouts: