String forums:
http://www.violinist.com
http://www.maestronet.com
Teaching Websites:
http://www.8notes.com/theory
http://www.musictheory.net
http://www.emusictheory.com/learning.html
http://www.violinmasterclass.com
San Francisco Area Youth Orchestras:
http://www.sfsymphony.org/community/youthorchestra
http://www.peninsulayouthorchestra.org
http://www.ecys.org (El Camino Youth Symphony)
http://wwwvillasinfonia.org (Villa Sinfonia in San Francisco)
http://www.ggph.org (Golden Gate Philharmonic in San Francisco)
http://www.sjys.org (San Jose Youth Symphony)
http://www.pacomusic.org (Palo Alto Chamber Orchestra)
http://www.oyo.org (Oakland Youth Orchestra)
San Franciso Bay Area Community Orchestras:
http://www.symphonyparnassus.org
http://www.bars-sf.org
http://www.siliconvalleysymphony.net/
Professional San Francisco Area Orchestras for concert-going:
http://www.sfsymphony.org
http://www.montereysymphony.org
http://www.thesymphony.org
http://www.santarosasymphony.com
http://www.marinsymphony.org/index.php
Violin and bows:
http://www.rolandfeller.ypguides.net (San Francisco)
http://www.ifshinviolins.com (Berkeley)
http://www.cremonasf.com (San Francisco)
http://www.stevensviolinshop.com (San Jose)
http://www.kamimotostrings.com (San Jose)
http://www.reuning.com (Boston)
http://www.fredoster.com (Philadelphia)
http://www.robertsonviolins.com (New Mexico)
http://www.quinnviolins.com (Minnesota)
Strings/sheetmusic/accessories:
http://www.imslp.org/wiki/Main_Page (public domain free sheet music!)
http://www.quinnviolins.com (offers the best prices for strings when combined with coupon code big10)
http://www.concordmusic.com
http://www.sheetmusicplus.com
http://sharmusic.com
http://www.southweststrings.com
http://www.bu.edu/library/music/sheetmusic.html (free sheet music resources)
http://www.unionmusiccompany.com (San Francisco)