http://www.violinonline.com/ offers free sheet music and a music store, exercises online, and basics on playing violin.
http://www.soundjunction.org/allabouttheviolin.aspa?NodeID=1 gives overview information and is the site for composing original creations and recording them with their software tools.
http://plus.maths.org/issue31/features/woodhouse/index.html explores the math and science behind playing the violin.
http://www.violinwizard.com/ gives a history of the violin and includes pages on music, buying a violin, playing, and tuning.
http://www.allviolin.com/ contains an in-depth history of the violin, famous violinists, historic makers, bibliography of violin terms, and links on the various styles of music played on the violin.
http://www.violinist.com/ maintains a violinist blog with great helps for beginners to proficient players, news on modern classical music for violins, reviews of violins and luthiers around the globe, festivals, and weekly contests.
http://www.classicalarchives.com/instrument/Violin.html gives an overview and history of the violin and features downloadable music for the instrument.
http://www.theviolinsite.com/violin_making/index.html shows how to make a violin, famous luthiers, and types of violins. Links are included for a directory of violin makers, teachers, violin pedagogy, a practice system, and sheet music.
http://www.centrum.is/hansi/construction/ gives step-by-step construction of a violin and includes pages on sound and care and maintenance.
http://library.thinkquest.org/27178/en/section/3/1.html gives a list of famous violin composers and pages include the history, manufacture, and playing the violin.
http://africlassical.blogspot.com/2008/06/violin-concerto-of-afro-cuban-composer.html gives biographical information of African-Cuban and African-American violin composers. Another site for African-American violin composers is http://chevalierdesaintgeorges.homestead.com/Dede.html.
http://www.leonarda.com/le339.html is a site listing African-American women composers. They are listed by instrument, so violinists are easily found.
http://encyclopedia.jrank.org/articles/pages/4177/Cook-Will-Marion-1869-1944.html gives the history of a great African-American violinist who passed his torch to Duke Ellington.
http://www.catgutacoustical.org/research/articles/modetune/ is a research article on pitch and intonation of stringed instruments.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0002554 is a research article on the science behind the wood density of the older and modern violins.
http://physicsworld.com/cws/article/print/696 includes an award-winning research article on the secrets of the Stradivarius sound.
http://www.rps.psu.edu/jan98/violin.html depicts the famous machine made by Lily Wang and how she structured it after the strings and violin.
http://violinmasterclass.com/mc_kids.php is a great site for introducing kids to playing violin. Site also includes classes for adults.
http://musiced.about.com/gi/dynamic/offsite.htm?zi=1/XJ/Ya&sdn=musiced&cdn=education&tm=14&f=20&tt=14&bt=1&bts=0&zu=http%3A//www.folkofthewood.com/page5307.htm has many lessons for violin from beginner to advanced, pages on how to care for violins, and includes an online store for instruments, accessories, and music.
http://www.onlineviolinvideolessons.com/ offers violin instruction on DVD and has many lessons on the website.
http://www.student-violins.com/article-2-free-online-violin-lessons.html is a site for beginning students of violin and offers sizing tips, buying suggestions, and free online lessons.
http://www.theviolinsite.com/studio/index.html is an online directory of violin teachers online listed by state.
http://www.theviolinsite.com/journal.html is an online video presentation of violin lessons.
http://www.theviolinsite.com/journal.html provides students with an online tuner for violin.