Hold your horses there buddy. Before you start typing down tips and tweaking your configuration, it's important that I point you towards zsh's official site once again. Zsh's page is located at http://www.zsh.org, and you can take your browser there to take a look at the Frequently Asked Questions section as well as other interesting entries such as Scripts & contributions. Turns out this is our main source of information for our new favorite shell, so I recommend you refer it to keep up with changes between releases and the awesome user guides and manuals located there.
Perhaps the most feature-packed item on the list of recommendations is the zsh wiki (http://zshwiki.org). There you will find a lot of useful information about zsh together with tips and user-suggested configurations. Overall an excellent starting point for stuffing your startup files to the gills. It's worth noting that this is a user-maintained site, which means you can contribute to it by submitting...