Code. Build something. Figure out something you'd like to build, then figure out out to build it. You can't help but learn if you take that route.
If that's not your cup of tea, then start contributing to open source projects. Learn Git and Subversion, then start taking tickets for Firefox or Chrome. Start off with the easy things, then work your way up. There's lots out there that needs attention, and being able to show a potential employer your commits will stand you in good stead. There was a guy who was developing Chrome on here a while back offering you just that: get in touch with him, and he'll start feeding you tickets.
If that's not your cup of tea, then start contributing to open source projects. Learn Git and Subversion, then start taking tickets for Firefox or Chrome. Start off with the easy things, then work your way up. There's lots out there that needs attention, and being able to show a potential employer your commits will stand you in good stead. There was a guy who was developing Chrome on here a while back offering you just that: get in touch with him, and he'll start feeding you tickets.
Ah, found it. here you go: http://www.aaronboodman.com/2010/10/wherein-i-help-you-get-g...