In no particular order, a list of SVN Commands that I use most often. Note that these are command line instructions, if you need a GUI all the following are available in Tortoise.
svn info | Shows which repository you are working in, and details about who committed last |
svn st | Status of your current working copy |
svn up | Update your working copy to match any changes in the repository. Your local changes are not affected. |
svn commit | commit your changes to the repository |