I took some time before I could understand and use Bundler in my Ruby projects. There was something about it that just didn't click with me.
In hindsight, I should have learned Bundler earlier. Once you "get" the workflow, Bundler is very simple and very powerful at the same time. It's one of those well-made tools that makes it dead easy to do simple stuff, and entirely possible to do complex stuff when the time comes.
I wrote a Bundler primer for the latest PragPub, the Pragmatic Programmer's monthly magazine. If you're not using Bundler yet, I hope that this article will turn you into a Bundler user before dinner.
(Even if you don't care about Bundler, the rest of the magazine is likely to have something for you. PragPub is my favourite programming mag ever, and I'm proud to write for them when it happens.)