Slackware 14.0 is getting close to release ...
RC3 was released last Friday. See:
http://slackware.com/changelog/
If you want to learn one thing once, instead of being forced to re-learn Windows every couple of years, this might be the release for you. Not affiliated (aside from submitting miscellaneous bug fixes), just a happy user for the last two decades or so ...
Please find a mirror or torrent near you: http://slackware.com/getslack/