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.
Andy Roberts' Blog: the Baroque Guitar: An article on Vermeer’s “The guitar player” (which shows a Baroque guitar).
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.
BaroqueGuitar.net: Tablatures for the five-stringed baroque guitar (in PDF format), with information on performance, ornamentation, and composers of the era.
Early Guitar: Scores and MIDIs of arrangements by Dana Hawkes. In .pdf form.
Francois Campion :: Pieces for Baroque guitar in alternate tunings: A collection of pieces by Francois Campion for Baroque guitar, in modern tablature; also notes on Campion's tunings.
Guide to Early Instruments :: The Guitar and Vihuela: Describes and traces the development of early members of the guitar family.
Instructions for the Baroque Guitar: Three translations of contemporary guidance for Baroque guitar players, covering tuning, tablature, and stringing.
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.
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.
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.
The Guitar Pre-1650: The guitar and its predecessors; a short history with practical tips about finding/playing old instruments.
The Lute Ring: A webring for sites related to lutes and early guitars.