The following are the URLs where you can find useful manuals for Guile and Scheme.
http://www.gnu.org/software/guile/
http://www.schemers.org/
ftp://ftp.cs.utexas.edu/pub/garbage/cs345/schintro-v14/schintro_toc.html
http://www.informatik.uni-kiel.de/~scheme/
http://freespace.virgin.net/david.drysdale/guile/tutorial.html
http://nis-www.lanl.gov/~rosalia/gnudl-doc/learn_libguile_toc.html
http://theoryx5.uwinnipeg.ca/gnu/guile/guile-user.html#SEC_Top
http://www.nada.kth.se/~mdj/guile-ref/guile-ref_toc.html
http://www.red-bean.com/guile/guile/old/3540.html
http://nis-www.lanl.gov/~rosalia/mydocs/guile-user.html
http://www.cs.utexas.edu/users/lavender/courses/scheme/
http://www.cstr.ed.ac.uk/projects/festival/manual/festival_8.html#SEC24
http://www.cs.ccu.edu.tw/~dan/tutorials.html
http://www.wcug.wwu.edu/~randyman/COMPUTERS/SCHEME/start.htm
http://www.dmoz.org/Computers/Programming/Languages/Lisp/Scheme/Teaching/
http://www.cs.caltech.edu/~cs181/doc/
http://cis.csuohio.edu/~hysockel/Links/Documents.html