The Brazilian Guitar Book by Nelson Faria is a complete guide to playing guitar accompaniment and chord melodies in various Brazilian styles – Samba Bossa Nova Frevo etc.  Comes with a CD of Nelson demonstrating each exercise plus a tune in each style.  Many variations of basic comping patterns written out each with complete chord voicings.  Also includes short transcriptions of guitar parts as recorded by Toninho Horta Joao Bosco Joao Gilberto etc.