Welcome to TMate SubGit documentation.
As you already know, SubGit is a tool for teams that migrate from SVN to Git. It converts SVN repositories to Git and allows you to work with both systems simultaneously. Although it's quite straightforward and simple to use, it has many useful features and settings.
For initial setup, check out the Basic Guides section. You will find a generic Quick-Start Guide there and specific instructions for various Git servers.
To find out, how to address some specific cases and make the most of SubGit, browse through the Advanced Knowledge section.