How to add files to subversion

Hey i just made a plugin share-box, i don’t know how to add the files to the directory though :(.
Where do i do the code?
“# Create a local directory on your machine to house
# a copy of the repository.

$ mkdir my-local-dir

# Check out the repository

$ svn co https://plugins.svn.www.ads-software.com/your-plugin-name my-local-dir
> A my-local-dir/trunk
> A my-local-dir/branches
> A my-local-dir/tags
> Checked out revision 11325.

# As you can see, subversion has added ( “A” for “add” )
# all of the directories from the central repository to
# your local copy.

# Copy the plugin files to the local copy.
# Put everything in the trunk/ directory for now.

$ cd my-local-dir/
my-local-dir/$ cp ~/my-plugin.php trunk/my-plugin.php
my-local-dir/$ cp ~/readme.txt trunk/readme.txt

# Let subversion know you want to add those new files
# back into the central repository.

my-local-dir/$ svn add trunk/*
> A trunk/my-plugin.php
> A trunk/readme.txt

# Now check in the changes back to the central repository.
# Give a message to the check in.

my-local-dir/$ svn ci -m ‘Adding first version of my plugin’
> Adding trunk/my-plugin.php
> Adding trunk/readme.txt
> Transmitting file data .
> Committed revision 11326.

# All done!”

It just say’s “Add your files to the trunk/ directory of your local copy of the repository.” BUT HOW???
Please help me