If we are going to version our own code, then we need to start with finding a suitable SVN host to house our repository. There are a lot of SVN hosting providers that are free to use, but they often come with limitations regarding the number of users and the amount of disk space offered. You may have to read the fine print before you find one that suits your needs.
For this example, we are going to make use of Google's free code repository at http://code.google.com/hosting (read more information about the project at http://code.google.com). Anyone with a Google account can get a 2048 MB repository quota, as well as a wiki and a ticketing system, but it is a requirement that any submitted code be compatible with an open-source license. This is a free public service, so it's perfect for an open-source project. Anyone can "check out" the code (just like we did earlier when we checked out the WordPress code), but only members you invite to your project will get privileges...