I want the user 'kevin' to be able to ftp/sftp read/write/execute files in the /home/kevin/public_html dir...
This shouldn't be hard, I'm just a beginner. Any advice is welcome!
make sure kevin is the owner of the directory, you can use the chown command like this:
assuming you are already in /home/kevin
also you may need to change the read/write/execute permissions like this:
you may want to use 755 for files that need to be executable.
For more info on octal file permissions, see http://en.wikipedia.org/wiki/Chmod
You can find out other info my typing
There may be other things you have to do depending on which FTP daemon you are using. For example, if you are using the ProFTPd, check out this HOWTO: http://ubuntuforums.org/showthread.php?t=79588