TODAY, 2:00pm:  Learn to solder!  Part of Teen Tech Month at Oakland Public Library.  Main branch, 14th St & Madison.  Anyone can learn.  Make a cool kit today.  All teens welcome!  Free.
http://72.27.230.96/events/main-library/solder-cool-stuff 
And, next Saturday:  Learn to Solder at the West Oakland Branch -- also free!
http://www.oaklandlibrary.org/events/west-oakland-branch/solder-cool-stuff
 
Lots of other cool stuff happening as part of Teen Tech Month at the Oakland Public Libraries:
http://www.oaklandlibrary.org/teens/events-programs/teen-maker-month
 
Also, as Marc already pointed out, you can check this out, tomorrow (Sunday):
http://www.wikiseat.org/check-out-wikiseat-at-the-oakland-public-library/
 
Best,
Mitch.