Lots of books

http://www.ebook3000.com/Architecture/list_97_2.html

 some useful others less so either way pdfs and free
http://www.ebook3000.com/Architecture/list_97_2.html

Interesting study of the sun

Sky Above, Earth Below, Design of the Sun School for Environmental Studies

http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/01BKab-i.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/02Bk-ste.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/03BKpv.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/04BKnatl.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/05BKnatv.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/06BKdesd.pdf
http://scholar.lib.vt.edu/theses/available/etd-05222001-110045/unrestricted/07BKappn.pdf

the links above are for the different chapters in the book, chapters are as listed below.

1. Abstract/ intro
2. Site
3. Photovoltaic
4. Natural Light
5. Natural Ventilation
6. Design Dwgs
7. Bibliography