Early Guitar - Scores and MIDIs of arrangements by Dana Hawkes. In .pdf form. - http://www.earlyguitar.net/
The Guitar in England - Excerpts from "The Early Guitar: A History and Handbook" (James Tyler, OUP, 1980), describing the development of the vihuela, Renaissance and Baroque, and English guitars, with comments on tunings and playing techniques. - http://www.standingstones.com/engguit.html
BaroqueGuitar.net - Tablatures for the five-stringed baroque guitar (in PDF format), with information on performance, ornamentation, and composers of the era. - http://www.baroqueguitar.net/
Sixteenth-Century Printed Tablatures - An annotated bibliography of tablature written for the lute, vihuela, early guitar, cittern, bandora, mandora, and orpharion; arranged chronologically and by composer. - http://www.library.appstate.edu/music/lute/home.html
The Guitar Pre-1650 - The guitar and its predecessors; a short history with practical tips about finding/playing old instruments. - http://www.whitetreeaz.com/guitar1650/guitar.htm
A manuscript found in Oporto - Preserved in Galvao-Kristófcsák Foundation of Lagos, in Algarve, Portugal, it is a unique, anonymous collection of works for five course Baroque guitar. - http://polyhymnion.org/adc/index-eng.html
The Lute Ring - A webring for sites related to lutes and early guitars. - http://www.webring.com/hub?ring=luteandearlyguit
Instructions for the Baroque Guitar - Three translations of contemporary guidance for Baroque guitar players, covering tuning, tablature, and stringing. - http://www.lutesoc.co.uk/baroqueguitar.htm
Baroque Guitar for the Modern Performer - An article exploring the differences between the baroque and modern classical instrument, their respective repertoires, and adapting the older music for the modern instrument. - http://guitar.canzona.com/baroque.shtml
The Baroque Guitar :: Printed Music from 1606-1737 - Dr Gary Boyes' research into playing styles and repertoire for the Baroque guitar, with an explanation of tablature used in the period. - http://www.library.appstate.edu/music/guitar/home.html